| /* |
| * Mesa 3-D graphics library |
| * Version: 6.5.2 |
| * |
| * Copyright (C) 1999-2006 Brian Paul All Rights Reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included |
| * in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
| * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN |
| * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
| * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| */ |
| |
| |
| /* |
| * Image convolution functions. |
| * |
| * Notes: filter kernel elements are indexed by <n> and <m> as in |
| * the GL spec. |
| */ |
| |
| |
| #include "glheader.h" |
| #include "bufferobj.h" |
| #include "colormac.h" |
| #include "convolve.h" |
| #include "context.h" |
| #include "image.h" |
| #include "mtypes.h" |
| #include "pixel.h" |
| #include "state.h" |
| |
| |
| /* |
| * Given an internalFormat token passed to glConvolutionFilter |
| * or glSeparableFilter, return the corresponding base format. |
| * Return -1 if invalid token. |
| */ |
| static GLint |
| base_filter_format( GLenum format ) |
| { |
| switch (format) { |
| case GL_ALPHA: |
| case GL_ALPHA4: |
| case GL_ALPHA8: |
| case GL_ALPHA12: |
| case GL_ALPHA16: |
| return GL_ALPHA; |
| case GL_LUMINANCE: |
| case GL_LUMINANCE4: |
| case GL_LUMINANCE8: |
| case GL_LUMINANCE12: |
| case GL_LUMINANCE16: |
| return GL_LUMINANCE; |
| case GL_LUMINANCE_ALPHA: |
| case GL_LUMINANCE4_ALPHA4: |
| case GL_LUMINANCE6_ALPHA2: |
| case GL_LUMINANCE8_ALPHA8: |
| case GL_LUMINANCE12_ALPHA4: |
| case GL_LUMINANCE12_ALPHA12: |
| case GL_LUMINANCE16_ALPHA16: |
| return GL_LUMINANCE_ALPHA; |
| case GL_INTENSITY: |
| case GL_INTENSITY4: |
| case GL_INTENSITY8: |
| case GL_INTENSITY12: |
| case GL_INTENSITY16: |
| return GL_INTENSITY; |
| case GL_RGB: |
| case GL_R3_G3_B2: |
| case GL_RGB4: |
| case GL_RGB5: |
| case GL_RGB8: |
| case GL_RGB10: |
| case GL_RGB12: |
| case GL_RGB16: |
| return GL_RGB; |
| case 4: |
| case GL_RGBA: |
| case GL_RGBA2: |
| case GL_RGBA4: |
| case GL_RGB5_A1: |
| case GL_RGBA8: |
| case GL_RGB10_A2: |
| case GL_RGBA12: |
| case GL_RGBA16: |
| return GL_RGBA; |
| default: |
| return -1; /* error */ |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_ConvolutionFilter1D(GLenum target, GLenum internalFormat, GLsizei width, GLenum format, GLenum type, const GLvoid *image) |
| { |
| GLint baseFormat; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| if (target != GL_CONVOLUTION_1D) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter1D(target)"); |
| return; |
| } |
| |
| baseFormat = base_filter_format(internalFormat); |
| if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter1D(internalFormat)"); |
| return; |
| } |
| |
| if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter1D(width)"); |
| return; |
| } |
| |
| if (!_mesa_is_legal_format_and_type(ctx, format, type)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glConvolutionFilter1D(format or type)"); |
| return; |
| } |
| |
| if (format == GL_COLOR_INDEX || |
| format == GL_STENCIL_INDEX || |
| format == GL_DEPTH_COMPONENT || |
| format == GL_INTENSITY || |
| type == GL_BITMAP) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter1D(format or type)"); |
| return; |
| } |
| |
| ctx->Convolution1D.Format = format; |
| ctx->Convolution1D.InternalFormat = internalFormat; |
| ctx->Convolution1D.Width = width; |
| ctx->Convolution1D.Height = 1; |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| /* unpack filter from PBO */ |
| GLubyte *buf; |
| if (!_mesa_validate_pbo_access(1, &ctx->Unpack, width, 1, 1, |
| format, type, image)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glConvolutionFilter1D(invalid PBO access)"); |
| return; |
| } |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| GL_READ_ONLY_ARB, |
| ctx->Unpack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glConvolutionFilter1D(PBO is mapped)"); |
| return; |
| } |
| image = ADD_POINTERS(buf, image); |
| } |
| else if (!image) { |
| return; |
| } |
| |
| _mesa_unpack_color_span_float(ctx, width, GL_RGBA, |
| ctx->Convolution1D.Filter, |
| format, type, image, &ctx->Unpack, |
| 0); /* transferOps */ |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| ctx->Unpack.BufferObj); |
| } |
| |
| _mesa_scale_and_bias_rgba(width, |
| (GLfloat (*)[4]) ctx->Convolution1D.Filter, |
| ctx->Pixel.ConvolutionFilterScale[0][0], |
| ctx->Pixel.ConvolutionFilterScale[0][1], |
| ctx->Pixel.ConvolutionFilterScale[0][2], |
| ctx->Pixel.ConvolutionFilterScale[0][3], |
| ctx->Pixel.ConvolutionFilterBias[0][0], |
| ctx->Pixel.ConvolutionFilterBias[0][1], |
| ctx->Pixel.ConvolutionFilterBias[0][2], |
| ctx->Pixel.ConvolutionFilterBias[0][3]); |
| |
| ctx->NewState |= _NEW_PIXEL; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_ConvolutionFilter2D(GLenum target, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *image) |
| { |
| GLint baseFormat; |
| GLint i; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| if (target != GL_CONVOLUTION_2D) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(target)"); |
| return; |
| } |
| |
| baseFormat = base_filter_format(internalFormat); |
| if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(internalFormat)"); |
| return; |
| } |
| |
| if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter2D(width)"); |
| return; |
| } |
| if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glConvolutionFilter2D(height)"); |
| return; |
| } |
| |
| if (!_mesa_is_legal_format_and_type(ctx, format, type)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glConvolutionFilter2D(format or type)"); |
| return; |
| } |
| if (format == GL_COLOR_INDEX || |
| format == GL_STENCIL_INDEX || |
| format == GL_DEPTH_COMPONENT || |
| format == GL_INTENSITY || |
| type == GL_BITMAP) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionFilter2D(format or type)"); |
| return; |
| } |
| |
| /* this should have been caught earlier */ |
| assert(_mesa_components_in_format(format)); |
| |
| ctx->Convolution2D.Format = format; |
| ctx->Convolution2D.InternalFormat = internalFormat; |
| ctx->Convolution2D.Width = width; |
| ctx->Convolution2D.Height = height; |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| /* unpack filter from PBO */ |
| GLubyte *buf; |
| if (!_mesa_validate_pbo_access(2, &ctx->Unpack, width, height, 1, |
| format, type, image)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glConvolutionFilter2D(invalid PBO access)"); |
| return; |
| } |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| GL_READ_ONLY_ARB, |
| ctx->Unpack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glConvolutionFilter2D(PBO is mapped)"); |
| return; |
| } |
| image = ADD_POINTERS(buf, image); |
| } |
| else if (!image) { |
| return; |
| } |
| |
| /* Unpack filter image. We always store filters in RGBA format. */ |
| for (i = 0; i < height; i++) { |
| const GLvoid *src = _mesa_image_address2d(&ctx->Unpack, image, width, |
| height, format, type, i, 0); |
| GLfloat *dst = ctx->Convolution2D.Filter + i * width * 4; |
| _mesa_unpack_color_span_float(ctx, width, GL_RGBA, dst, |
| format, type, src, &ctx->Unpack, |
| 0); /* transferOps */ |
| } |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| ctx->Unpack.BufferObj); |
| } |
| |
| _mesa_scale_and_bias_rgba(width * height, |
| (GLfloat (*)[4]) ctx->Convolution2D.Filter, |
| ctx->Pixel.ConvolutionFilterScale[1][0], |
| ctx->Pixel.ConvolutionFilterScale[1][1], |
| ctx->Pixel.ConvolutionFilterScale[1][2], |
| ctx->Pixel.ConvolutionFilterScale[1][3], |
| ctx->Pixel.ConvolutionFilterBias[1][0], |
| ctx->Pixel.ConvolutionFilterBias[1][1], |
| ctx->Pixel.ConvolutionFilterBias[1][2], |
| ctx->Pixel.ConvolutionFilterBias[1][3]); |
| |
| ctx->NewState |= _NEW_PIXEL; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_ConvolutionParameterf(GLenum target, GLenum pname, GLfloat param) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| GLuint c; |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| switch (target) { |
| case GL_CONVOLUTION_1D: |
| c = 0; |
| break; |
| case GL_CONVOLUTION_2D: |
| c = 1; |
| break; |
| case GL_SEPARABLE_2D: |
| c = 2; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterf(target)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_CONVOLUTION_BORDER_MODE: |
| if (param == (GLfloat) GL_REDUCE || |
| param == (GLfloat) GL_CONSTANT_BORDER || |
| param == (GLfloat) GL_REPLICATE_BORDER) { |
| ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) param; |
| } |
| else { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterf(params)"); |
| return; |
| } |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterf(pname)"); |
| return; |
| } |
| |
| ctx->NewState |= _NEW_PIXEL; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_ConvolutionParameterfv(GLenum target, GLenum pname, const GLfloat *params) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| GLuint c; |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| switch (target) { |
| case GL_CONVOLUTION_1D: |
| c = 0; |
| break; |
| case GL_CONVOLUTION_2D: |
| c = 1; |
| break; |
| case GL_SEPARABLE_2D: |
| c = 2; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterfv(target)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_CONVOLUTION_BORDER_COLOR: |
| COPY_4V(ctx->Pixel.ConvolutionBorderColor[c], params); |
| break; |
| case GL_CONVOLUTION_BORDER_MODE: |
| if (params[0] == (GLfloat) GL_REDUCE || |
| params[0] == (GLfloat) GL_CONSTANT_BORDER || |
| params[0] == (GLfloat) GL_REPLICATE_BORDER) { |
| ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) params[0]; |
| } |
| else { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterfv(params)"); |
| return; |
| } |
| break; |
| case GL_CONVOLUTION_FILTER_SCALE: |
| COPY_4V(ctx->Pixel.ConvolutionFilterScale[c], params); |
| break; |
| case GL_CONVOLUTION_FILTER_BIAS: |
| COPY_4V(ctx->Pixel.ConvolutionFilterBias[c], params); |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameterfv(pname)"); |
| return; |
| } |
| |
| ctx->NewState |= _NEW_PIXEL; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_ConvolutionParameteri(GLenum target, GLenum pname, GLint param) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| GLuint c; |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| switch (target) { |
| case GL_CONVOLUTION_1D: |
| c = 0; |
| break; |
| case GL_CONVOLUTION_2D: |
| c = 1; |
| break; |
| case GL_SEPARABLE_2D: |
| c = 2; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteri(target)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_CONVOLUTION_BORDER_MODE: |
| if (param == (GLint) GL_REDUCE || |
| param == (GLint) GL_CONSTANT_BORDER || |
| param == (GLint) GL_REPLICATE_BORDER) { |
| ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) param; |
| } |
| else { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteri(params)"); |
| return; |
| } |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteri(pname)"); |
| return; |
| } |
| |
| ctx->NewState |= _NEW_PIXEL; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_ConvolutionParameteriv(GLenum target, GLenum pname, const GLint *params) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| GLuint c; |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| switch (target) { |
| case GL_CONVOLUTION_1D: |
| c = 0; |
| break; |
| case GL_CONVOLUTION_2D: |
| c = 1; |
| break; |
| case GL_SEPARABLE_2D: |
| c = 2; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteriv(target)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_CONVOLUTION_BORDER_COLOR: |
| ctx->Pixel.ConvolutionBorderColor[c][0] = INT_TO_FLOAT(params[0]); |
| ctx->Pixel.ConvolutionBorderColor[c][1] = INT_TO_FLOAT(params[1]); |
| ctx->Pixel.ConvolutionBorderColor[c][2] = INT_TO_FLOAT(params[2]); |
| ctx->Pixel.ConvolutionBorderColor[c][3] = INT_TO_FLOAT(params[3]); |
| break; |
| case GL_CONVOLUTION_BORDER_MODE: |
| if (params[0] == (GLint) GL_REDUCE || |
| params[0] == (GLint) GL_CONSTANT_BORDER || |
| params[0] == (GLint) GL_REPLICATE_BORDER) { |
| ctx->Pixel.ConvolutionBorderMode[c] = (GLenum) params[0]; |
| } |
| else { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteriv(params)"); |
| return; |
| } |
| break; |
| case GL_CONVOLUTION_FILTER_SCALE: |
| /* COPY_4V(ctx->Pixel.ConvolutionFilterScale[c], params); */ |
| /* need cast to prevent compiler warnings */ |
| ctx->Pixel.ConvolutionFilterScale[c][0] = (GLfloat) params[0]; |
| ctx->Pixel.ConvolutionFilterScale[c][1] = (GLfloat) params[1]; |
| ctx->Pixel.ConvolutionFilterScale[c][2] = (GLfloat) params[2]; |
| ctx->Pixel.ConvolutionFilterScale[c][3] = (GLfloat) params[3]; |
| break; |
| case GL_CONVOLUTION_FILTER_BIAS: |
| /* COPY_4V(ctx->Pixel.ConvolutionFilterBias[c], params); */ |
| /* need cast to prevent compiler warnings */ |
| ctx->Pixel.ConvolutionFilterBias[c][0] = (GLfloat) params[0]; |
| ctx->Pixel.ConvolutionFilterBias[c][1] = (GLfloat) params[1]; |
| ctx->Pixel.ConvolutionFilterBias[c][2] = (GLfloat) params[2]; |
| ctx->Pixel.ConvolutionFilterBias[c][3] = (GLfloat) params[3]; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glConvolutionParameteriv(pname)"); |
| return; |
| } |
| |
| ctx->NewState |= _NEW_PIXEL; |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_CopyConvolutionFilter1D(GLenum target, GLenum internalFormat, GLint x, GLint y, GLsizei width) |
| { |
| GLint baseFormat; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| if (target != GL_CONVOLUTION_1D) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter1D(target)"); |
| return; |
| } |
| |
| baseFormat = base_filter_format(internalFormat); |
| if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter1D(internalFormat)"); |
| return; |
| } |
| |
| if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glCopyConvolutionFilter1D(width)"); |
| return; |
| } |
| |
| ctx->Driver.CopyConvolutionFilter1D( ctx, target, |
| internalFormat, x, y, width); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_CopyConvolutionFilter2D(GLenum target, GLenum internalFormat, GLint x, GLint y, GLsizei width, GLsizei height) |
| { |
| GLint baseFormat; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| if (target != GL_CONVOLUTION_2D) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter2D(target)"); |
| return; |
| } |
| |
| baseFormat = base_filter_format(internalFormat); |
| if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glCopyConvolutionFilter2D(internalFormat)"); |
| return; |
| } |
| |
| if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glCopyConvolutionFilter2D(width)"); |
| return; |
| } |
| if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glCopyConvolutionFilter2D(height)"); |
| return; |
| } |
| |
| ctx->Driver.CopyConvolutionFilter2D( ctx, target, internalFormat, x, y, |
| width, height ); |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GetConvolutionFilter(GLenum target, GLenum format, GLenum type, |
| GLvoid *image) |
| { |
| struct gl_convolution_attrib *filter; |
| GLuint row; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| if (ctx->NewState) { |
| _mesa_update_state(ctx); |
| } |
| |
| if (!_mesa_is_legal_format_and_type(ctx, format, type)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glGetConvolutionFilter(format or type)"); |
| return; |
| } |
| |
| if (format == GL_COLOR_INDEX || |
| format == GL_STENCIL_INDEX || |
| format == GL_DEPTH_COMPONENT || |
| format == GL_INTENSITY || |
| type == GL_BITMAP) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(format or type)"); |
| return; |
| } |
| |
| switch (target) { |
| case GL_CONVOLUTION_1D: |
| filter = &(ctx->Convolution1D); |
| break; |
| case GL_CONVOLUTION_2D: |
| filter = &(ctx->Convolution2D); |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(target)"); |
| return; |
| } |
| |
| if (ctx->Pack.BufferObj->Name) { |
| /* Pack the filter into a PBO */ |
| GLubyte *buf; |
| if (!_mesa_validate_pbo_access(2, &ctx->Pack, |
| filter->Width, filter->Height, |
| 1, format, type, image)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetConvolutionFilter(invalid PBO access)"); |
| return; |
| } |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| GL_WRITE_ONLY_ARB, |
| ctx->Pack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetConvolutionFilter(PBO is mapped)"); |
| return; |
| } |
| image = ADD_POINTERS(image, buf); |
| } |
| |
| for (row = 0; row < filter->Height; row++) { |
| GLvoid *dst = _mesa_image_address2d(&ctx->Pack, image, filter->Width, |
| filter->Height, format, type, |
| row, 0); |
| GLfloat (*src)[4] = (GLfloat (*)[4]) (filter->Filter + row * filter->Width * 4); |
| _mesa_pack_rgba_span_float(ctx, filter->Width, src, |
| format, type, dst, &ctx->Pack, 0x0); |
| } |
| |
| if (ctx->Pack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| ctx->Pack.BufferObj); |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GetConvolutionParameterfv(GLenum target, GLenum pname, GLfloat *params) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| const struct gl_convolution_attrib *conv; |
| GLuint c; |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| switch (target) { |
| case GL_CONVOLUTION_1D: |
| c = 0; |
| conv = &ctx->Convolution1D; |
| break; |
| case GL_CONVOLUTION_2D: |
| c = 1; |
| conv = &ctx->Convolution2D; |
| break; |
| case GL_SEPARABLE_2D: |
| c = 2; |
| conv = &ctx->Separable2D; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameterfv(target)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_CONVOLUTION_BORDER_COLOR: |
| COPY_4V(params, ctx->Pixel.ConvolutionBorderColor[c]); |
| break; |
| case GL_CONVOLUTION_BORDER_MODE: |
| *params = (GLfloat) ctx->Pixel.ConvolutionBorderMode[c]; |
| break; |
| case GL_CONVOLUTION_FILTER_SCALE: |
| COPY_4V(params, ctx->Pixel.ConvolutionFilterScale[c]); |
| break; |
| case GL_CONVOLUTION_FILTER_BIAS: |
| COPY_4V(params, ctx->Pixel.ConvolutionFilterBias[c]); |
| break; |
| case GL_CONVOLUTION_FORMAT: |
| *params = (GLfloat) conv->Format; |
| break; |
| case GL_CONVOLUTION_WIDTH: |
| *params = (GLfloat) conv->Width; |
| break; |
| case GL_CONVOLUTION_HEIGHT: |
| *params = (GLfloat) conv->Height; |
| break; |
| case GL_MAX_CONVOLUTION_WIDTH: |
| *params = (GLfloat) ctx->Const.MaxConvolutionWidth; |
| break; |
| case GL_MAX_CONVOLUTION_HEIGHT: |
| *params = (GLfloat) ctx->Const.MaxConvolutionHeight; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameterfv(pname)"); |
| return; |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GetConvolutionParameteriv(GLenum target, GLenum pname, GLint *params) |
| { |
| GET_CURRENT_CONTEXT(ctx); |
| const struct gl_convolution_attrib *conv; |
| GLuint c; |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| switch (target) { |
| case GL_CONVOLUTION_1D: |
| c = 0; |
| conv = &ctx->Convolution1D; |
| break; |
| case GL_CONVOLUTION_2D: |
| c = 1; |
| conv = &ctx->Convolution2D; |
| break; |
| case GL_SEPARABLE_2D: |
| c = 2; |
| conv = &ctx->Separable2D; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameteriv(target)"); |
| return; |
| } |
| |
| switch (pname) { |
| case GL_CONVOLUTION_BORDER_COLOR: |
| params[0] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][0]); |
| params[1] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][1]); |
| params[2] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][2]); |
| params[3] = FLOAT_TO_INT(ctx->Pixel.ConvolutionBorderColor[c][3]); |
| break; |
| case GL_CONVOLUTION_BORDER_MODE: |
| *params = (GLint) ctx->Pixel.ConvolutionBorderMode[c]; |
| break; |
| case GL_CONVOLUTION_FILTER_SCALE: |
| params[0] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][0]; |
| params[1] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][1]; |
| params[2] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][2]; |
| params[3] = (GLint) ctx->Pixel.ConvolutionFilterScale[c][3]; |
| break; |
| case GL_CONVOLUTION_FILTER_BIAS: |
| params[0] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][0]; |
| params[1] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][1]; |
| params[2] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][2]; |
| params[3] = (GLint) ctx->Pixel.ConvolutionFilterBias[c][3]; |
| break; |
| case GL_CONVOLUTION_FORMAT: |
| *params = (GLint) conv->Format; |
| break; |
| case GL_CONVOLUTION_WIDTH: |
| *params = (GLint) conv->Width; |
| break; |
| case GL_CONVOLUTION_HEIGHT: |
| *params = (GLint) conv->Height; |
| break; |
| case GL_MAX_CONVOLUTION_WIDTH: |
| *params = (GLint) ctx->Const.MaxConvolutionWidth; |
| break; |
| case GL_MAX_CONVOLUTION_HEIGHT: |
| *params = (GLint) ctx->Const.MaxConvolutionHeight; |
| break; |
| default: |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionParameteriv(pname)"); |
| return; |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_GetSeparableFilter(GLenum target, GLenum format, GLenum type, |
| GLvoid *row, GLvoid *column, GLvoid *span) |
| { |
| const GLint colStart = MAX_CONVOLUTION_WIDTH * 4; |
| struct gl_convolution_attrib *filter; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END(ctx); |
| |
| if (ctx->NewState) { |
| _mesa_update_state(ctx); |
| } |
| |
| if (target != GL_SEPARABLE_2D) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetSeparableFilter(target)"); |
| return; |
| } |
| |
| if (!_mesa_is_legal_format_and_type(ctx, format, type)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetConvolutionFilter(format or type)"); |
| return; |
| } |
| |
| if (format == GL_COLOR_INDEX || |
| format == GL_STENCIL_INDEX || |
| format == GL_DEPTH_COMPONENT || |
| format == GL_INTENSITY || |
| type == GL_BITMAP) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glGetConvolutionFilter(format or type)"); |
| return; |
| } |
| |
| filter = &ctx->Separable2D; |
| |
| if (ctx->Pack.BufferObj->Name) { |
| /* Pack filter into PBO */ |
| GLubyte *buf; |
| if (!_mesa_validate_pbo_access(1, &ctx->Pack, filter->Width, 1, 1, |
| format, type, row)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetSeparableFilter(invalid PBO access, width)"); |
| return; |
| } |
| if (!_mesa_validate_pbo_access(1, &ctx->Pack, filter->Height, 1, 1, |
| format, type, column)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetSeparableFilter(invalid PBO access, height)"); |
| return; |
| } |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_PACK_BUFFER_EXT, |
| GL_WRITE_ONLY_ARB, |
| ctx->Pack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glGetSeparableFilter(PBO is mapped)"); |
| return; |
| } |
| row = ADD_POINTERS(buf, row); |
| column = ADD_POINTERS(buf, column); |
| } |
| |
| /* Row filter */ |
| if (row) { |
| GLvoid *dst = _mesa_image_address1d(&ctx->Pack, row, filter->Width, |
| format, type, 0); |
| _mesa_pack_rgba_span_float(ctx, filter->Width, |
| (GLfloat (*)[4]) filter->Filter, |
| format, type, dst, &ctx->Pack, 0x0); |
| } |
| |
| /* Column filter */ |
| if (column) { |
| GLvoid *dst = _mesa_image_address1d(&ctx->Pack, column, filter->Height, |
| format, type, 0); |
| GLfloat (*src)[4] = (GLfloat (*)[4]) (filter->Filter + colStart); |
| _mesa_pack_rgba_span_float(ctx, filter->Height, src, |
| format, type, dst, &ctx->Pack, 0x0); |
| } |
| |
| (void) span; /* unused at this time */ |
| |
| if (ctx->Pack.BufferObj->Name) { |
| /* Pack filter into PBO */ |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| ctx->Unpack.BufferObj); |
| } |
| } |
| |
| |
| void GLAPIENTRY |
| _mesa_SeparableFilter2D(GLenum target, GLenum internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid *row, const GLvoid *column) |
| { |
| const GLint colStart = MAX_CONVOLUTION_WIDTH * 4; |
| GLint baseFormat; |
| GET_CURRENT_CONTEXT(ctx); |
| ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx); |
| |
| if (target != GL_SEPARABLE_2D) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(target)"); |
| return; |
| } |
| |
| baseFormat = base_filter_format(internalFormat); |
| if (baseFormat < 0 || baseFormat == GL_COLOR_INDEX) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(internalFormat)"); |
| return; |
| } |
| |
| if (width < 0 || width > MAX_CONVOLUTION_WIDTH) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glSeparableFilter2D(width)"); |
| return; |
| } |
| if (height < 0 || height > MAX_CONVOLUTION_HEIGHT) { |
| _mesa_error(ctx, GL_INVALID_VALUE, "glSeparableFilter2D(height)"); |
| return; |
| } |
| |
| if (!_mesa_is_legal_format_and_type(ctx, format, type)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, "glSeparableFilter2D(format or type)"); |
| return; |
| } |
| |
| if (format == GL_COLOR_INDEX || |
| format == GL_STENCIL_INDEX || |
| format == GL_DEPTH_COMPONENT || |
| format == GL_INTENSITY || |
| type == GL_BITMAP) { |
| _mesa_error(ctx, GL_INVALID_ENUM, "glSeparableFilter2D(format or type)"); |
| return; |
| } |
| |
| ctx->Separable2D.Format = format; |
| ctx->Separable2D.InternalFormat = internalFormat; |
| ctx->Separable2D.Width = width; |
| ctx->Separable2D.Height = height; |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| /* unpack filter from PBO */ |
| GLubyte *buf; |
| if (!_mesa_validate_pbo_access(1, &ctx->Unpack, width, 1, 1, |
| format, type, row)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glSeparableFilter2D(invalid PBO access, width)"); |
| return; |
| } |
| if (!_mesa_validate_pbo_access(1, &ctx->Unpack, height, 1, 1, |
| format, type, column)) { |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glSeparableFilter2D(invalid PBO access, height)"); |
| return; |
| } |
| buf = (GLubyte *) ctx->Driver.MapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| GL_READ_ONLY_ARB, |
| ctx->Unpack.BufferObj); |
| if (!buf) { |
| /* buffer is already mapped - that's an error */ |
| _mesa_error(ctx, GL_INVALID_OPERATION, |
| "glSeparableFilter2D(PBO is mapped)"); |
| return; |
| } |
| row = ADD_POINTERS(buf, row); |
| column = ADD_POINTERS(buf, column); |
| } |
| |
| /* unpack row filter */ |
| if (row) { |
| _mesa_unpack_color_span_float(ctx, width, GL_RGBA, |
| ctx->Separable2D.Filter, |
| format, type, row, &ctx->Unpack, |
| 0); /* transferOps */ |
| |
| _mesa_scale_and_bias_rgba(width, |
| (GLfloat (*)[4]) ctx->Separable2D.Filter, |
| ctx->Pixel.ConvolutionFilterScale[2][0], |
| ctx->Pixel.ConvolutionFilterScale[2][1], |
| ctx->Pixel.ConvolutionFilterScale[2][2], |
| ctx->Pixel.ConvolutionFilterScale[2][3], |
| ctx->Pixel.ConvolutionFilterBias[2][0], |
| ctx->Pixel.ConvolutionFilterBias[2][1], |
| ctx->Pixel.ConvolutionFilterBias[2][2], |
| ctx->Pixel.ConvolutionFilterBias[2][3]); |
| } |
| |
| /* unpack column filter */ |
| if (column) { |
| _mesa_unpack_color_span_float(ctx, height, GL_RGBA, |
| &ctx->Separable2D.Filter[colStart], |
| format, type, column, &ctx->Unpack, |
| 0); /* transferOps */ |
| |
| _mesa_scale_and_bias_rgba(height, |
| (GLfloat (*)[4]) (ctx->Separable2D.Filter + colStart), |
| ctx->Pixel.ConvolutionFilterScale[2][0], |
| ctx->Pixel.ConvolutionFilterScale[2][1], |
| ctx->Pixel.ConvolutionFilterScale[2][2], |
| ctx->Pixel.ConvolutionFilterScale[2][3], |
| ctx->Pixel.ConvolutionFilterBias[2][0], |
| ctx->Pixel.ConvolutionFilterBias[2][1], |
| ctx->Pixel.ConvolutionFilterBias[2][2], |
| ctx->Pixel.ConvolutionFilterBias[2][3]); |
| } |
| |
| if (ctx->Unpack.BufferObj->Name) { |
| ctx->Driver.UnmapBuffer(ctx, GL_PIXEL_UNPACK_BUFFER_EXT, |
| ctx->Unpack.BufferObj); |
| } |
| |
| ctx->NewState |= _NEW_PIXEL; |
| } |
| |
| |
| /**********************************************************************/ |
| /*** image convolution functions ***/ |
| /**********************************************************************/ |
| |
| static void |
| convolve_1d_reduce(GLint srcWidth, const GLfloat src[][4], |
| GLint filterWidth, const GLfloat filter[][4], |
| GLfloat dest[][4]) |
| { |
| GLint dstWidth; |
| GLint i, n; |
| |
| if (filterWidth >= 1) |
| dstWidth = srcWidth - (filterWidth - 1); |
| else |
| dstWidth = srcWidth; |
| |
| if (dstWidth <= 0) |
| return; /* null result */ |
| |
| for (i = 0; i < dstWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (n = 0; n < filterWidth; n++) { |
| sumR += src[i + n][RCOMP] * filter[n][RCOMP]; |
| sumG += src[i + n][GCOMP] * filter[n][GCOMP]; |
| sumB += src[i + n][BCOMP] * filter[n][BCOMP]; |
| sumA += src[i + n][ACOMP] * filter[n][ACOMP]; |
| } |
| dest[i][RCOMP] = sumR; |
| dest[i][GCOMP] = sumG; |
| dest[i][BCOMP] = sumB; |
| dest[i][ACOMP] = sumA; |
| } |
| } |
| |
| |
| static void |
| convolve_1d_constant(GLint srcWidth, const GLfloat src[][4], |
| GLint filterWidth, const GLfloat filter[][4], |
| GLfloat dest[][4], |
| const GLfloat borderColor[4]) |
| { |
| const GLint halfFilterWidth = filterWidth / 2; |
| GLint i, n; |
| |
| for (i = 0; i < srcWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (n = 0; n < filterWidth; n++) { |
| if (i + n < halfFilterWidth || i + n - halfFilterWidth >= srcWidth) { |
| sumR += borderColor[RCOMP] * filter[n][RCOMP]; |
| sumG += borderColor[GCOMP] * filter[n][GCOMP]; |
| sumB += borderColor[BCOMP] * filter[n][BCOMP]; |
| sumA += borderColor[ACOMP] * filter[n][ACOMP]; |
| } |
| else { |
| sumR += src[i + n - halfFilterWidth][RCOMP] * filter[n][RCOMP]; |
| sumG += src[i + n - halfFilterWidth][GCOMP] * filter[n][GCOMP]; |
| sumB += src[i + n - halfFilterWidth][BCOMP] * filter[n][BCOMP]; |
| sumA += src[i + n - halfFilterWidth][ACOMP] * filter[n][ACOMP]; |
| } |
| } |
| dest[i][RCOMP] = sumR; |
| dest[i][GCOMP] = sumG; |
| dest[i][BCOMP] = sumB; |
| dest[i][ACOMP] = sumA; |
| } |
| } |
| |
| |
| static void |
| convolve_1d_replicate(GLint srcWidth, const GLfloat src[][4], |
| GLint filterWidth, const GLfloat filter[][4], |
| GLfloat dest[][4]) |
| { |
| const GLint halfFilterWidth = filterWidth / 2; |
| GLint i, n; |
| |
| for (i = 0; i < srcWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (n = 0; n < filterWidth; n++) { |
| if (i + n < halfFilterWidth) { |
| sumR += src[0][RCOMP] * filter[n][RCOMP]; |
| sumG += src[0][GCOMP] * filter[n][GCOMP]; |
| sumB += src[0][BCOMP] * filter[n][BCOMP]; |
| sumA += src[0][ACOMP] * filter[n][ACOMP]; |
| } |
| else if (i + n - halfFilterWidth >= srcWidth) { |
| sumR += src[srcWidth - 1][RCOMP] * filter[n][RCOMP]; |
| sumG += src[srcWidth - 1][GCOMP] * filter[n][GCOMP]; |
| sumB += src[srcWidth - 1][BCOMP] * filter[n][BCOMP]; |
| sumA += src[srcWidth - 1][ACOMP] * filter[n][ACOMP]; |
| } |
| else { |
| sumR += src[i + n - halfFilterWidth][RCOMP] * filter[n][RCOMP]; |
| sumG += src[i + n - halfFilterWidth][GCOMP] * filter[n][GCOMP]; |
| sumB += src[i + n - halfFilterWidth][BCOMP] * filter[n][BCOMP]; |
| sumA += src[i + n - halfFilterWidth][ACOMP] * filter[n][ACOMP]; |
| } |
| } |
| dest[i][RCOMP] = sumR; |
| dest[i][GCOMP] = sumG; |
| dest[i][BCOMP] = sumB; |
| dest[i][ACOMP] = sumA; |
| } |
| } |
| |
| |
| static void |
| convolve_2d_reduce(GLint srcWidth, GLint srcHeight, |
| const GLfloat src[][4], |
| GLint filterWidth, GLint filterHeight, |
| const GLfloat filter[][4], |
| GLfloat dest[][4]) |
| { |
| GLint dstWidth, dstHeight; |
| GLint i, j, n, m; |
| |
| if (filterWidth >= 1) |
| dstWidth = srcWidth - (filterWidth - 1); |
| else |
| dstWidth = srcWidth; |
| |
| if (filterHeight >= 1) |
| dstHeight = srcHeight - (filterHeight - 1); |
| else |
| dstHeight = srcHeight; |
| |
| if (dstWidth <= 0 || dstHeight <= 0) |
| return; |
| |
| for (j = 0; j < dstHeight; j++) { |
| for (i = 0; i < dstWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (m = 0; m < filterHeight; m++) { |
| for (n = 0; n < filterWidth; n++) { |
| const GLint k = (j + m) * srcWidth + i + n; |
| const GLint f = m * filterWidth + n; |
| sumR += src[k][RCOMP] * filter[f][RCOMP]; |
| sumG += src[k][GCOMP] * filter[f][GCOMP]; |
| sumB += src[k][BCOMP] * filter[f][BCOMP]; |
| sumA += src[k][ACOMP] * filter[f][ACOMP]; |
| } |
| } |
| dest[j * dstWidth + i][RCOMP] = sumR; |
| dest[j * dstWidth + i][GCOMP] = sumG; |
| dest[j * dstWidth + i][BCOMP] = sumB; |
| dest[j * dstWidth + i][ACOMP] = sumA; |
| } |
| } |
| } |
| |
| |
| static void |
| convolve_2d_constant(GLint srcWidth, GLint srcHeight, |
| const GLfloat src[][4], |
| GLint filterWidth, GLint filterHeight, |
| const GLfloat filter[][4], |
| GLfloat dest[][4], |
| const GLfloat borderColor[4]) |
| { |
| const GLint halfFilterWidth = filterWidth / 2; |
| const GLint halfFilterHeight = filterHeight / 2; |
| GLint i, j, n, m; |
| |
| for (j = 0; j < srcHeight; j++) { |
| for (i = 0; i < srcWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (m = 0; m < filterHeight; m++) { |
| for (n = 0; n < filterWidth; n++) { |
| const GLint f = m * filterWidth + n; |
| const GLint is = i + n - halfFilterWidth; |
| const GLint js = j + m - halfFilterHeight; |
| if (is < 0 || is >= srcWidth || |
| js < 0 || js >= srcHeight) { |
| sumR += borderColor[RCOMP] * filter[f][RCOMP]; |
| sumG += borderColor[GCOMP] * filter[f][GCOMP]; |
| sumB += borderColor[BCOMP] * filter[f][BCOMP]; |
| sumA += borderColor[ACOMP] * filter[f][ACOMP]; |
| } |
| else { |
| const GLint k = js * srcWidth + is; |
| sumR += src[k][RCOMP] * filter[f][RCOMP]; |
| sumG += src[k][GCOMP] * filter[f][GCOMP]; |
| sumB += src[k][BCOMP] * filter[f][BCOMP]; |
| sumA += src[k][ACOMP] * filter[f][ACOMP]; |
| } |
| } |
| } |
| dest[j * srcWidth + i][RCOMP] = sumR; |
| dest[j * srcWidth + i][GCOMP] = sumG; |
| dest[j * srcWidth + i][BCOMP] = sumB; |
| dest[j * srcWidth + i][ACOMP] = sumA; |
| } |
| } |
| } |
| |
| |
| static void |
| convolve_2d_replicate(GLint srcWidth, GLint srcHeight, |
| const GLfloat src[][4], |
| GLint filterWidth, GLint filterHeight, |
| const GLfloat filter[][4], |
| GLfloat dest[][4]) |
| { |
| const GLint halfFilterWidth = filterWidth / 2; |
| const GLint halfFilterHeight = filterHeight / 2; |
| GLint i, j, n, m; |
| |
| for (j = 0; j < srcHeight; j++) { |
| for (i = 0; i < srcWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (m = 0; m < filterHeight; m++) { |
| for (n = 0; n < filterWidth; n++) { |
| const GLint f = m * filterWidth + n; |
| GLint is = i + n - halfFilterWidth; |
| GLint js = j + m - halfFilterHeight; |
| GLint k; |
| if (is < 0) |
| is = 0; |
| else if (is >= srcWidth) |
| is = srcWidth - 1; |
| if (js < 0) |
| js = 0; |
| else if (js >= srcHeight) |
| js = srcHeight - 1; |
| k = js * srcWidth + is; |
| sumR += src[k][RCOMP] * filter[f][RCOMP]; |
| sumG += src[k][GCOMP] * filter[f][GCOMP]; |
| sumB += src[k][BCOMP] * filter[f][BCOMP]; |
| sumA += src[k][ACOMP] * filter[f][ACOMP]; |
| } |
| } |
| dest[j * srcWidth + i][RCOMP] = sumR; |
| dest[j * srcWidth + i][GCOMP] = sumG; |
| dest[j * srcWidth + i][BCOMP] = sumB; |
| dest[j * srcWidth + i][ACOMP] = sumA; |
| } |
| } |
| } |
| |
| |
| static void |
| convolve_sep_reduce(GLint srcWidth, GLint srcHeight, |
| const GLfloat src[][4], |
| GLint filterWidth, GLint filterHeight, |
| const GLfloat rowFilt[][4], |
| const GLfloat colFilt[][4], |
| GLfloat dest[][4]) |
| { |
| GLint dstWidth, dstHeight; |
| GLint i, j, n, m; |
| |
| if (filterWidth >= 1) |
| dstWidth = srcWidth - (filterWidth - 1); |
| else |
| dstWidth = srcWidth; |
| |
| if (filterHeight >= 1) |
| dstHeight = srcHeight - (filterHeight - 1); |
| else |
| dstHeight = srcHeight; |
| |
| if (dstWidth <= 0 || dstHeight <= 0) |
| return; |
| |
| for (j = 0; j < dstHeight; j++) { |
| for (i = 0; i < dstWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (m = 0; m < filterHeight; m++) { |
| for (n = 0; n < filterWidth; n++) { |
| GLint k = (j + m) * srcWidth + i + n; |
| sumR += src[k][RCOMP] * rowFilt[n][RCOMP] * colFilt[m][RCOMP]; |
| sumG += src[k][GCOMP] * rowFilt[n][GCOMP] * colFilt[m][GCOMP]; |
| sumB += src[k][BCOMP] * rowFilt[n][BCOMP] * colFilt[m][BCOMP]; |
| sumA += src[k][ACOMP] * rowFilt[n][ACOMP] * colFilt[m][ACOMP]; |
| } |
| } |
| dest[j * dstWidth + i][RCOMP] = sumR; |
| dest[j * dstWidth + i][GCOMP] = sumG; |
| dest[j * dstWidth + i][BCOMP] = sumB; |
| dest[j * dstWidth + i][ACOMP] = sumA; |
| } |
| } |
| } |
| |
| |
| static void |
| convolve_sep_constant(GLint srcWidth, GLint srcHeight, |
| const GLfloat src[][4], |
| GLint filterWidth, GLint filterHeight, |
| const GLfloat rowFilt[][4], |
| const GLfloat colFilt[][4], |
| GLfloat dest[][4], |
| const GLfloat borderColor[4]) |
| { |
| const GLint halfFilterWidth = filterWidth / 2; |
| const GLint halfFilterHeight = filterHeight / 2; |
| GLint i, j, n, m; |
| |
| for (j = 0; j < srcHeight; j++) { |
| for (i = 0; i < srcWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (m = 0; m < filterHeight; m++) { |
| for (n = 0; n < filterWidth; n++) { |
| const GLint is = i + n - halfFilterWidth; |
| const GLint js = j + m - halfFilterHeight; |
| if (is < 0 || is >= srcWidth || |
| js < 0 || js >= srcHeight) { |
| sumR += borderColor[RCOMP] * rowFilt[n][RCOMP] * colFilt[m][RCOMP]; |
| sumG += borderColor[GCOMP] * rowFilt[n][GCOMP] * colFilt[m][GCOMP]; |
| sumB += borderColor[BCOMP] * rowFilt[n][BCOMP] * colFilt[m][BCOMP]; |
| sumA += borderColor[ACOMP] * rowFilt[n][ACOMP] * colFilt[m][ACOMP]; |
| } |
| else { |
| GLint k = js * srcWidth + is; |
| sumR += src[k][RCOMP] * rowFilt[n][RCOMP] * colFilt[m][RCOMP]; |
| sumG += src[k][GCOMP] * rowFilt[n][GCOMP] * colFilt[m][GCOMP]; |
| sumB += src[k][BCOMP] * rowFilt[n][BCOMP] * colFilt[m][BCOMP]; |
| sumA += src[k][ACOMP] * rowFilt[n][ACOMP] * colFilt[m][ACOMP]; |
| } |
| |
| } |
| } |
| dest[j * srcWidth + i][RCOMP] = sumR; |
| dest[j * srcWidth + i][GCOMP] = sumG; |
| dest[j * srcWidth + i][BCOMP] = sumB; |
| dest[j * srcWidth + i][ACOMP] = sumA; |
| } |
| } |
| } |
| |
| |
| static void |
| convolve_sep_replicate(GLint srcWidth, GLint srcHeight, |
| const GLfloat src[][4], |
| GLint filterWidth, GLint filterHeight, |
| const GLfloat rowFilt[][4], |
| const GLfloat colFilt[][4], |
| GLfloat dest[][4]) |
| { |
| const GLint halfFilterWidth = filterWidth / 2; |
| const GLint halfFilterHeight = filterHeight / 2; |
| GLint i, j, n, m; |
| |
| for (j = 0; j < srcHeight; j++) { |
| for (i = 0; i < srcWidth; i++) { |
| GLfloat sumR = 0.0; |
| GLfloat sumG = 0.0; |
| GLfloat sumB = 0.0; |
| GLfloat sumA = 0.0; |
| for (m = 0; m < filterHeight; m++) { |
| for (n = 0; n < filterWidth; n++) { |
| GLint is = i + n - halfFilterWidth; |
| GLint js = j + m - halfFilterHeight; |
| GLint k; |
| if (is < 0) |
| is = 0; |
| else if (is >= srcWidth) |
| is = srcWidth - 1; |
| if (js < 0) |
| js = 0; |
| else if (js >= srcHeight) |
| js = srcHeight - 1; |
| k = js * srcWidth + is; |
| sumR += src[k][RCOMP] * rowFilt[n][RCOMP] * colFilt[m][RCOMP]; |
| sumG += src[k][GCOMP] * rowFilt[n][GCOMP] * colFilt[m][GCOMP]; |
| sumB += src[k][BCOMP] * rowFilt[n][BCOMP] * colFilt[m][BCOMP]; |
| sumA += src[k][ACOMP] * rowFilt[n][ACOMP] * colFilt[m][ACOMP]; |
| } |
| } |
| dest[j * srcWidth + i][RCOMP] = sumR; |
| dest[j * srcWidth + i][GCOMP] = sumG; |
| dest[j * srcWidth + i][BCOMP] = sumB; |
| dest[j * srcWidth + i][ACOMP] = sumA; |
| } |
| } |
| } |
| |
| |
| |
| void |
| _mesa_convolve_1d_image(const GLcontext *ctx, GLsizei *width, |
| const GLfloat *srcImage, GLfloat *dstImage) |
| { |
| switch (ctx->Pixel.ConvolutionBorderMode[0]) { |
| case GL_REDUCE: |
| convolve_1d_reduce(*width, (const GLfloat (*)[4]) srcImage, |
| ctx->Convolution1D.Width, |
| (const GLfloat (*)[4]) ctx->Convolution1D.Filter, |
| (GLfloat (*)[4]) dstImage); |
| *width = *width - (MAX2(ctx->Convolution1D.Width, 1) - 1); |
| break; |
| case GL_CONSTANT_BORDER: |
| convolve_1d_constant(*width, (const GLfloat (*)[4]) srcImage, |
| ctx->Convolution1D.Width, |
| (const GLfloat (*)[4]) ctx->Convolution1D.Filter, |
| (GLfloat (*)[4]) dstImage, |
| ctx->Pixel.ConvolutionBorderColor[0]); |
| break; |
| case GL_REPLICATE_BORDER: |
| convolve_1d_replicate(*width, (const GLfloat (*)[4]) srcImage, |
| ctx->Convolution1D.Width, |
| (const GLfloat (*)[4]) ctx->Convolution1D.Filter, |
| (GLfloat (*)[4]) dstImage); |
| break; |
| default: |
| ; |
| } |
| } |
| |
| |
| void |
| _mesa_convolve_2d_image(const GLcontext *ctx, GLsizei *width, GLsizei *height, |
| const GLfloat *srcImage, GLfloat *dstImage) |
| { |
| switch (ctx->Pixel.ConvolutionBorderMode[1]) { |
| case GL_REDUCE: |
| convolve_2d_reduce(*width, *height, |
| (const GLfloat (*)[4]) srcImage, |
| ctx->Convolution2D.Width, |
| ctx->Convolution2D.Height, |
| (const GLfloat (*)[4]) ctx->Convolution2D.Filter, |
| (GLfloat (*)[4]) dstImage); |
| *width = *width - (MAX2(ctx->Convolution2D.Width, 1) - 1); |
| *height = *height - (MAX2(ctx->Convolution2D.Height, 1) - 1); |
| break; |
| case GL_CONSTANT_BORDER: |
| convolve_2d_constant(*width, *height, |
| (const GLfloat (*)[4]) srcImage, |
| ctx->Convolution2D.Width, |
| ctx->Convolution2D.Height, |
| (const GLfloat (*)[4]) ctx->Convolution2D.Filter, |
| (GLfloat (*)[4]) dstImage, |
| ctx->Pixel.ConvolutionBorderColor[1]); |
| break; |
| case GL_REPLICATE_BORDER: |
| convolve_2d_replicate(*width, *height, |
| (const GLfloat (*)[4]) srcImage, |
| ctx->Convolution2D.Width, |
| ctx->Convolution2D.Height, |
| (const GLfloat (*)[4])ctx->Convolution2D.Filter, |
| (GLfloat (*)[4]) dstImage); |
| break; |
| default: |
| ; |
| } |
| } |
| |
| |
| void |
| _mesa_convolve_sep_image(const GLcontext *ctx, |
| GLsizei *width, GLsizei *height, |
| const GLfloat *srcImage, GLfloat *dstImage) |
| { |
| const GLfloat *rowFilter = ctx->Separable2D.Filter; |
| const GLfloat *colFilter = rowFilter + 4 * MAX_CONVOLUTION_WIDTH; |
| |
| switch (ctx->Pixel.ConvolutionBorderMode[2]) { |
| case GL_REDUCE: |
| convolve_sep_reduce(*width, *height, |
| (const GLfloat (*)[4]) srcImage, |
| ctx->Separable2D.Width, |
| ctx->Separable2D.Height, |
| (const GLfloat (*)[4]) rowFilter, |
| (const GLfloat (*)[4]) colFilter, |
| (GLfloat (*)[4]) dstImage); |
| *width = *width - (MAX2(ctx->Separable2D.Width, 1) - 1); |
| *height = *height - (MAX2(ctx->Separable2D.Height, 1) - 1); |
| break; |
| case GL_CONSTANT_BORDER: |
| convolve_sep_constant(*width, *height, |
| (const GLfloat (*)[4]) srcImage, |
| ctx->Separable2D.Width, |
| ctx->Separable2D.Height, |
| (const GLfloat (*)[4]) rowFilter, |
| (const GLfloat (*)[4]) colFilter, |
| (GLfloat (*)[4]) dstImage, |
| ctx->Pixel.ConvolutionBorderColor[2]); |
| break; |
| case GL_REPLICATE_BORDER: |
| convolve_sep_replicate(*width, *height, |
| (const GLfloat (*)[4]) srcImage, |
| ctx->Separable2D.Width, |
| ctx->Separable2D.Height, |
| (const GLfloat (*)[4]) rowFilter, |
| (const GLfloat (*)[4]) colFilter, |
| (GLfloat (*)[4]) dstImage); |
| break; |
| default: |
| ; |
| } |
| } |
| |
| |
| |
| /* |
| * This function computes an image's size after convolution. |
| * If the convolution border mode is GL_REDUCE, the post-convolution |
| * image will be smaller than the original. |
| */ |
| void |
| _mesa_adjust_image_for_convolution(const GLcontext *ctx, GLuint dimensions, |
| GLsizei *width, GLsizei *height) |
| { |
| if (ctx->Pixel.Convolution1DEnabled |
| && dimensions == 1 |
| && ctx->Pixel.ConvolutionBorderMode[0] == GL_REDUCE) { |
| *width = *width - (MAX2(ctx->Convolution1D.Width, 1) - 1); |
| } |
| else if (ctx->Pixel.Convolution2DEnabled |
| && dimensions > 1 |
| && ctx->Pixel.ConvolutionBorderMode[1] == GL_REDUCE) { |
| *width = *width - (MAX2(ctx->Convolution2D.Width, 1) - 1); |
| *height = *height - (MAX2(ctx->Convolution2D.Height, 1) - 1); |
| } |
| else if (ctx->Pixel.Separable2DEnabled |
| && dimensions > 1 |
| && ctx->Pixel.ConvolutionBorderMode[2] == GL_REDUCE) { |
| *width = *width - (MAX2(ctx->Separable2D.Width, 1) - 1); |
| *height = *height - (MAX2(ctx->Separable2D.Height, 1) - 1); |
| } |
| } |
