| /************************************************************************** |
| * |
| * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas. |
| * 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, sub license, 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 (including the |
| * next paragraph) 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 NON-INFRINGEMENT. |
| * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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. |
| * |
| **************************************************************************/ |
| |
| |
| #include "glheader.h" |
| #include "context.h" |
| #include "macros.h" |
| #include "enums.h" |
| #include "colormac.h" |
| #include "dd.h" |
| |
| #include "intel_screen.h" |
| #include "intel_context.h" |
| #include "intel_fbo.h" |
| #include "intel_regions.h" |
| #include "swrast/swrast.h" |
| |
| int |
| intel_translate_shadow_compare_func( GLenum func ) |
| { |
| switch(func) { |
| case GL_NEVER: |
| return COMPAREFUNC_ALWAYS; |
| case GL_LESS: |
| return COMPAREFUNC_LEQUAL; |
| case GL_LEQUAL: |
| return COMPAREFUNC_LESS; |
| case GL_GREATER: |
| return COMPAREFUNC_GEQUAL; |
| case GL_GEQUAL: |
| return COMPAREFUNC_GREATER; |
| case GL_NOTEQUAL: |
| return COMPAREFUNC_EQUAL; |
| case GL_EQUAL: |
| return COMPAREFUNC_NOTEQUAL; |
| case GL_ALWAYS: |
| return COMPAREFUNC_NEVER; |
| } |
| |
| fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func); |
| return COMPAREFUNC_NEVER; |
| } |
| |
| int |
| intel_translate_compare_func(GLenum func) |
| { |
| switch (func) { |
| case GL_NEVER: |
| return COMPAREFUNC_NEVER; |
| case GL_LESS: |
| return COMPAREFUNC_LESS; |
| case GL_LEQUAL: |
| return COMPAREFUNC_LEQUAL; |
| case GL_GREATER: |
| return COMPAREFUNC_GREATER; |
| case GL_GEQUAL: |
| return COMPAREFUNC_GEQUAL; |
| case GL_NOTEQUAL: |
| return COMPAREFUNC_NOTEQUAL; |
| case GL_EQUAL: |
| return COMPAREFUNC_EQUAL; |
| case GL_ALWAYS: |
| return COMPAREFUNC_ALWAYS; |
| } |
| |
| fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, func); |
| return COMPAREFUNC_ALWAYS; |
| } |
| |
| int |
| intel_translate_stencil_op(GLenum op) |
| { |
| switch (op) { |
| case GL_KEEP: |
| return STENCILOP_KEEP; |
| case GL_ZERO: |
| return STENCILOP_ZERO; |
| case GL_REPLACE: |
| return STENCILOP_REPLACE; |
| case GL_INCR: |
| return STENCILOP_INCRSAT; |
| case GL_DECR: |
| return STENCILOP_DECRSAT; |
| case GL_INCR_WRAP: |
| return STENCILOP_INCR; |
| case GL_DECR_WRAP: |
| return STENCILOP_DECR; |
| case GL_INVERT: |
| return STENCILOP_INVERT; |
| default: |
| return STENCILOP_ZERO; |
| } |
| } |
| |
| int |
| intel_translate_blend_factor(GLenum factor) |
| { |
| switch (factor) { |
| case GL_ZERO: |
| return BLENDFACT_ZERO; |
| case GL_SRC_ALPHA: |
| return BLENDFACT_SRC_ALPHA; |
| case GL_ONE: |
| return BLENDFACT_ONE; |
| case GL_SRC_COLOR: |
| return BLENDFACT_SRC_COLR; |
| case GL_ONE_MINUS_SRC_COLOR: |
| return BLENDFACT_INV_SRC_COLR; |
| case GL_DST_COLOR: |
| return BLENDFACT_DST_COLR; |
| case GL_ONE_MINUS_DST_COLOR: |
| return BLENDFACT_INV_DST_COLR; |
| case GL_ONE_MINUS_SRC_ALPHA: |
| return BLENDFACT_INV_SRC_ALPHA; |
| case GL_DST_ALPHA: |
| return BLENDFACT_DST_ALPHA; |
| case GL_ONE_MINUS_DST_ALPHA: |
| return BLENDFACT_INV_DST_ALPHA; |
| case GL_SRC_ALPHA_SATURATE: |
| return BLENDFACT_SRC_ALPHA_SATURATE; |
| case GL_CONSTANT_COLOR: |
| return BLENDFACT_CONST_COLOR; |
| case GL_ONE_MINUS_CONSTANT_COLOR: |
| return BLENDFACT_INV_CONST_COLOR; |
| case GL_CONSTANT_ALPHA: |
| return BLENDFACT_CONST_ALPHA; |
| case GL_ONE_MINUS_CONSTANT_ALPHA: |
| return BLENDFACT_INV_CONST_ALPHA; |
| } |
| |
| fprintf(stderr, "Unknown value in %s: %x\n", __FUNCTION__, factor); |
| return BLENDFACT_ZERO; |
| } |
| |
| int |
| intel_translate_logic_op(GLenum opcode) |
| { |
| switch (opcode) { |
| case GL_CLEAR: |
| return LOGICOP_CLEAR; |
| case GL_AND: |
| return LOGICOP_AND; |
| case GL_AND_REVERSE: |
| return LOGICOP_AND_RVRSE; |
| case GL_COPY: |
| return LOGICOP_COPY; |
| case GL_COPY_INVERTED: |
| return LOGICOP_COPY_INV; |
| case GL_AND_INVERTED: |
| return LOGICOP_AND_INV; |
| case GL_NOOP: |
| return LOGICOP_NOOP; |
| case GL_XOR: |
| return LOGICOP_XOR; |
| case GL_OR: |
| return LOGICOP_OR; |
| case GL_OR_INVERTED: |
| return LOGICOP_OR_INV; |
| case GL_NOR: |
| return LOGICOP_NOR; |
| case GL_EQUIV: |
| return LOGICOP_EQUIV; |
| case GL_INVERT: |
| return LOGICOP_INV; |
| case GL_OR_REVERSE: |
| return LOGICOP_OR_RVRSE; |
| case GL_NAND: |
| return LOGICOP_NAND; |
| case GL_SET: |
| return LOGICOP_SET; |
| default: |
| return LOGICOP_SET; |
| } |
| } |
| |
| |
| static void |
| intelClearColor(GLcontext * ctx, const GLfloat color[4]) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| GLubyte clear[4]; |
| |
| CLAMPED_FLOAT_TO_UBYTE(clear[0], color[0]); |
| CLAMPED_FLOAT_TO_UBYTE(clear[1], color[1]); |
| CLAMPED_FLOAT_TO_UBYTE(clear[2], color[2]); |
| CLAMPED_FLOAT_TO_UBYTE(clear[3], color[3]); |
| |
| /* compute both 32 and 16-bit clear values */ |
| intel->ClearColor8888 = INTEL_PACKCOLOR8888(clear[0], clear[1], |
| clear[2], clear[3]); |
| intel->ClearColor565 = INTEL_PACKCOLOR565(clear[0], clear[1], clear[2]); |
| } |
| |
| |
| /** |
| * Update the viewport transformation matrix. Depends on: |
| * - viewport pos/size |
| * - depthrange |
| * - window pos/size or FBO size |
| */ |
| static void |
| intelCalcViewport(GLcontext * ctx) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| const GLfloat *v = ctx->Viewport._WindowMap.m; |
| const GLfloat depthScale = 1.0F / ctx->DrawBuffer->_DepthMaxF; |
| GLfloat *m = intel->ViewportMatrix.m; |
| GLfloat yScale, yBias; |
| |
| if (ctx->DrawBuffer->Name) { |
| /* User created FBO */ |
| struct intel_renderbuffer *irb |
| = intel_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); |
| if (irb && !irb->RenderToTexture) { |
| /* y=0=top */ |
| yScale = -1.0; |
| yBias = irb->Base.Height; |
| } |
| else { |
| /* y=0=bottom */ |
| yScale = 1.0; |
| yBias = 0.0; |
| } |
| } |
| else { |
| /* window buffer, y=0=top */ |
| yScale = -1.0; |
| yBias = (intel->driDrawable) ? intel->driDrawable->h : 0.0F; |
| } |
| |
| m[MAT_SX] = v[MAT_SX]; |
| m[MAT_TX] = v[MAT_TX]; |
| |
| m[MAT_SY] = v[MAT_SY] * yScale; |
| m[MAT_TY] = v[MAT_TY] * yScale + yBias; |
| |
| m[MAT_SZ] = v[MAT_SZ] * depthScale; |
| m[MAT_TZ] = v[MAT_TZ] * depthScale; |
| } |
| |
| static void |
| intelViewport(GLcontext * ctx, |
| GLint x, GLint y, GLsizei width, GLsizei height) |
| { |
| intelCalcViewport(ctx); |
| } |
| |
| static void |
| intelDepthRange(GLcontext * ctx, GLclampd nearval, GLclampd farval) |
| { |
| intelCalcViewport(ctx); |
| } |
| |
| /* Fallback to swrast for select and feedback. |
| */ |
| static void |
| intelRenderMode(GLcontext * ctx, GLenum mode) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| FALLBACK(intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER)); |
| } |
| |
| |
| void |
| intelInitStateFuncs(struct dd_function_table *functions) |
| { |
| functions->RenderMode = intelRenderMode; |
| functions->Viewport = intelViewport; |
| functions->DepthRange = intelDepthRange; |
| functions->ClearColor = intelClearColor; |
| } |