| /************************************************************************** |
| * |
| * 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 "dd.h" |
| #include "tnl/tnl.h" |
| #include "tnl/t_context.h" |
| |
| #include "texmem.h" |
| |
| #include "drivers/common/driverfuncs.h" |
| |
| #include "intel_fbo.h" |
| #include "intel_screen.h" |
| #include "intel_batchbuffer.h" |
| |
| #include "i915_context.h" |
| #include "i915_reg.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_STATE |
| |
| static void |
| i915StencilFuncSeparate(GLcontext * ctx, GLenum face, GLenum func, GLint ref, |
| GLuint mask) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int test = intel_translate_compare_func(func); |
| |
| mask = mask & 0xff; |
| |
| DBG("%s : func: %s, ref : 0x%x, mask: 0x%x\n", __FUNCTION__, |
| _mesa_lookup_enum_by_nr(func), ref, mask); |
| |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_TEST_MASK; |
| i915->state.Ctx[I915_CTXREG_STATE4] |= (ENABLE_STENCIL_TEST_MASK | |
| STENCIL_TEST_MASK(mask)); |
| |
| i915->state.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_REF_MASK | |
| S5_STENCIL_TEST_FUNC_MASK); |
| |
| i915->state.Ctx[I915_CTXREG_LIS5] |= ((ref << S5_STENCIL_REF_SHIFT) | |
| (test << |
| S5_STENCIL_TEST_FUNC_SHIFT)); |
| } |
| |
| static void |
| i915StencilMaskSeparate(GLcontext * ctx, GLenum face, GLuint mask) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| |
| DBG("%s : mask 0x%x\n", __FUNCTION__, mask); |
| |
| mask = mask & 0xff; |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_STATE4] &= ~MODE4_ENABLE_STENCIL_WRITE_MASK; |
| i915->state.Ctx[I915_CTXREG_STATE4] |= (ENABLE_STENCIL_WRITE_MASK | |
| STENCIL_WRITE_MASK(mask)); |
| } |
| |
| |
| static void |
| i915StencilOpSeparate(GLcontext * ctx, GLenum face, GLenum fail, GLenum zfail, |
| GLenum zpass) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int fop = intel_translate_stencil_op(fail); |
| int dfop = intel_translate_stencil_op(zfail); |
| int dpop = intel_translate_stencil_op(zpass); |
| |
| |
| DBG("%s: fail : %s, zfail: %s, zpass : %s\n", __FUNCTION__, |
| _mesa_lookup_enum_by_nr(fail), |
| _mesa_lookup_enum_by_nr(zfail), _mesa_lookup_enum_by_nr(zpass)); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| |
| i915->state.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_FAIL_MASK | |
| S5_STENCIL_PASS_Z_FAIL_MASK | |
| S5_STENCIL_PASS_Z_PASS_MASK); |
| |
| i915->state.Ctx[I915_CTXREG_LIS5] |= ((fop << S5_STENCIL_FAIL_SHIFT) | |
| (dfop << |
| S5_STENCIL_PASS_Z_FAIL_SHIFT) | |
| (dpop << |
| S5_STENCIL_PASS_Z_PASS_SHIFT)); |
| } |
| |
| static void |
| i915AlphaFunc(GLcontext * ctx, GLenum func, GLfloat ref) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int test = intel_translate_compare_func(func); |
| GLubyte refByte; |
| |
| UNCLAMPED_FLOAT_TO_UBYTE(refByte, ref); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~(S6_ALPHA_TEST_FUNC_MASK | |
| S6_ALPHA_REF_MASK); |
| i915->state.Ctx[I915_CTXREG_LIS6] |= ((test << S6_ALPHA_TEST_FUNC_SHIFT) | |
| (((GLuint) refByte) << |
| S6_ALPHA_REF_SHIFT)); |
| } |
| |
| /* This function makes sure that the proper enables are |
| * set for LogicOp, Independant Alpha Blend, and Blending. |
| * It needs to be called from numerous places where we |
| * could change the LogicOp or Independant Alpha Blend without subsequent |
| * calls to glEnable. |
| */ |
| static void |
| i915EvalLogicOpBlendState(GLcontext * ctx) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| |
| if (RGBA_LOGICOP_ENABLED(ctx)) { |
| i915->state.Ctx[I915_CTXREG_LIS5] |= S5_LOGICOP_ENABLE; |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_CBUF_BLEND_ENABLE; |
| } |
| else { |
| i915->state.Ctx[I915_CTXREG_LIS5] &= ~S5_LOGICOP_ENABLE; |
| |
| if (ctx->Color.BlendEnabled) { |
| i915->state.Ctx[I915_CTXREG_LIS6] |= S6_CBUF_BLEND_ENABLE; |
| } |
| else { |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_CBUF_BLEND_ENABLE; |
| } |
| } |
| } |
| |
| static void |
| i915BlendColor(GLcontext * ctx, const GLfloat color[4]) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLubyte r, g, b, a; |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| UNCLAMPED_FLOAT_TO_UBYTE(r, color[RCOMP]); |
| UNCLAMPED_FLOAT_TO_UBYTE(g, color[GCOMP]); |
| UNCLAMPED_FLOAT_TO_UBYTE(b, color[BCOMP]); |
| UNCLAMPED_FLOAT_TO_UBYTE(a, color[ACOMP]); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_BLENDCOLOR1] = |
| (a << 24) | (r << 16) | (g << 8) | b; |
| } |
| |
| |
| #define DST_BLND_FACT(f) ((f)<<S6_CBUF_DST_BLEND_FACT_SHIFT) |
| #define SRC_BLND_FACT(f) ((f)<<S6_CBUF_SRC_BLEND_FACT_SHIFT) |
| #define DST_ABLND_FACT(f) ((f)<<IAB_DST_FACTOR_SHIFT) |
| #define SRC_ABLND_FACT(f) ((f)<<IAB_SRC_FACTOR_SHIFT) |
| |
| |
| |
| static GLuint |
| translate_blend_equation(GLenum mode) |
| { |
| switch (mode) { |
| case GL_FUNC_ADD: |
| return BLENDFUNC_ADD; |
| case GL_MIN: |
| return BLENDFUNC_MIN; |
| case GL_MAX: |
| return BLENDFUNC_MAX; |
| case GL_FUNC_SUBTRACT: |
| return BLENDFUNC_SUBTRACT; |
| case GL_FUNC_REVERSE_SUBTRACT: |
| return BLENDFUNC_REVERSE_SUBTRACT; |
| default: |
| return 0; |
| } |
| } |
| |
| static void |
| i915UpdateBlendState(GLcontext * ctx) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint iab = (i915->state.Ctx[I915_CTXREG_IAB] & |
| ~(IAB_SRC_FACTOR_MASK | |
| IAB_DST_FACTOR_MASK | |
| (BLENDFUNC_MASK << IAB_FUNC_SHIFT) | IAB_ENABLE)); |
| |
| GLuint lis6 = (i915->state.Ctx[I915_CTXREG_LIS6] & |
| ~(S6_CBUF_SRC_BLEND_FACT_MASK | |
| S6_CBUF_DST_BLEND_FACT_MASK | S6_CBUF_BLEND_FUNC_MASK)); |
| |
| GLuint eqRGB = ctx->Color.BlendEquationRGB; |
| GLuint eqA = ctx->Color.BlendEquationA; |
| GLuint srcRGB = ctx->Color.BlendSrcRGB; |
| GLuint dstRGB = ctx->Color.BlendDstRGB; |
| GLuint srcA = ctx->Color.BlendSrcA; |
| GLuint dstA = ctx->Color.BlendDstA; |
| |
| if (eqRGB == GL_MIN || eqRGB == GL_MAX) { |
| srcRGB = dstRGB = GL_ONE; |
| } |
| |
| if (eqA == GL_MIN || eqA == GL_MAX) { |
| srcA = dstA = GL_ONE; |
| } |
| |
| lis6 |= SRC_BLND_FACT(intel_translate_blend_factor(srcRGB)); |
| lis6 |= DST_BLND_FACT(intel_translate_blend_factor(dstRGB)); |
| lis6 |= translate_blend_equation(eqRGB) << S6_CBUF_BLEND_FUNC_SHIFT; |
| |
| iab |= SRC_ABLND_FACT(intel_translate_blend_factor(srcA)); |
| iab |= DST_ABLND_FACT(intel_translate_blend_factor(dstA)); |
| iab |= translate_blend_equation(eqA) << IAB_FUNC_SHIFT; |
| |
| if (srcA != srcRGB || dstA != dstRGB || eqA != eqRGB) |
| iab |= IAB_ENABLE; |
| |
| if (iab != i915->state.Ctx[I915_CTXREG_IAB] || |
| lis6 != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_IAB] = iab; |
| i915->state.Ctx[I915_CTXREG_LIS6] = lis6; |
| } |
| |
| /* This will catch a logicop blend equation */ |
| i915EvalLogicOpBlendState(ctx); |
| } |
| |
| |
| static void |
| i915BlendFuncSeparate(GLcontext * ctx, GLenum srcRGB, |
| GLenum dstRGB, GLenum srcA, GLenum dstA) |
| { |
| i915UpdateBlendState(ctx); |
| } |
| |
| |
| static void |
| i915BlendEquationSeparate(GLcontext * ctx, GLenum eqRGB, GLenum eqA) |
| { |
| i915UpdateBlendState(ctx); |
| } |
| |
| |
| static void |
| i915DepthFunc(GLcontext * ctx, GLenum func) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int test = intel_translate_compare_func(func); |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_DEPTH_TEST_FUNC_MASK; |
| i915->state.Ctx[I915_CTXREG_LIS6] |= test << S6_DEPTH_TEST_FUNC_SHIFT; |
| } |
| |
| static void |
| i915DepthMask(GLcontext * ctx, GLboolean flag) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| |
| DBG("%s flag (%d)\n", __FUNCTION__, flag); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| |
| if (flag && ctx->Depth.Test) |
| i915->state.Ctx[I915_CTXREG_LIS6] |= S6_DEPTH_WRITE_ENABLE; |
| else |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_DEPTH_WRITE_ENABLE; |
| } |
| |
| /* ============================================================= |
| * Polygon stipple |
| * |
| * The i915 supports a 4x4 stipple natively, GL wants 32x32. |
| * Fortunately stipple is usually a repeating pattern. |
| */ |
| static void |
| i915PolygonStipple(GLcontext * ctx, const GLubyte * mask) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| const GLubyte *m; |
| GLubyte p[4]; |
| int i, j, k; |
| int active = (ctx->Polygon.StippleFlag && |
| i915->intel.reduced_primitive == GL_TRIANGLES); |
| GLuint newMask; |
| |
| if (active) { |
| I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE); |
| i915->state.Stipple[I915_STPREG_ST1] &= ~ST1_ENABLE; |
| } |
| |
| /* Use the already unpacked stipple data from the context rather than the |
| * uninterpreted mask passed in. |
| */ |
| mask = (const GLubyte *)ctx->PolygonStipple; |
| m = mask; |
| |
| p[0] = mask[12] & 0xf; |
| p[0] |= p[0] << 4; |
| p[1] = mask[8] & 0xf; |
| p[1] |= p[1] << 4; |
| p[2] = mask[4] & 0xf; |
| p[2] |= p[2] << 4; |
| p[3] = mask[0] & 0xf; |
| p[3] |= p[3] << 4; |
| |
| for (k = 0; k < 8; k++) |
| for (j = 3; j >= 0; j--) |
| for (i = 0; i < 4; i++, m++) |
| if (*m != p[j]) { |
| i915->intel.hw_stipple = 0; |
| return; |
| } |
| |
| newMask = (((p[0] & 0xf) << 0) | |
| ((p[1] & 0xf) << 4) | |
| ((p[2] & 0xf) << 8) | ((p[3] & 0xf) << 12)); |
| |
| |
| if (newMask == 0xffff || newMask == 0x0) { |
| /* this is needed to make conform pass */ |
| i915->intel.hw_stipple = 0; |
| return; |
| } |
| |
| i915->state.Stipple[I915_STPREG_ST1] &= ~0xffff; |
| i915->state.Stipple[I915_STPREG_ST1] |= newMask; |
| i915->intel.hw_stipple = 1; |
| |
| if (active) |
| i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE; |
| } |
| |
| |
| /* ============================================================= |
| * Hardware clipping |
| */ |
| static void |
| i915Scissor(GLcontext * ctx, GLint x, GLint y, GLsizei w, GLsizei h) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int x1, y1, x2, y2; |
| |
| if (!ctx->DrawBuffer) |
| return; |
| |
| DBG("%s %d,%d %dx%d\n", __FUNCTION__, x, y, w, h); |
| |
| if (ctx->DrawBuffer->Name == 0) { |
| x1 = x; |
| y1 = ctx->DrawBuffer->Height - (y + h); |
| x2 = x + w - 1; |
| y2 = y1 + h - 1; |
| DBG("%s %d..%d,%d..%d (inverted)\n", __FUNCTION__, x1, x2, y1, y2); |
| } |
| else { |
| /* FBO - not inverted |
| */ |
| x1 = x; |
| y1 = y; |
| x2 = x + w - 1; |
| y2 = y + h - 1; |
| DBG("%s %d..%d,%d..%d (not inverted)\n", __FUNCTION__, x1, x2, y1, y2); |
| } |
| |
| x1 = CLAMP(x1, 0, ctx->DrawBuffer->Width - 1); |
| y1 = CLAMP(y1, 0, ctx->DrawBuffer->Height - 1); |
| x2 = CLAMP(x2, 0, ctx->DrawBuffer->Width - 1); |
| y2 = CLAMP(y2, 0, ctx->DrawBuffer->Height - 1); |
| |
| DBG("%s %d..%d,%d..%d (clamped)\n", __FUNCTION__, x1, x2, y1, y2); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS); |
| i915->state.Buffer[I915_DESTREG_SR1] = (y1 << 16) | (x1 & 0xffff); |
| i915->state.Buffer[I915_DESTREG_SR2] = (y2 << 16) | (x2 & 0xffff); |
| } |
| |
| static void |
| i915LogicOp(GLcontext * ctx, GLenum opcode) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int tmp = intel_translate_logic_op(opcode); |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_STATE4] &= ~LOGICOP_MASK; |
| i915->state.Ctx[I915_CTXREG_STATE4] |= LOGIC_OP_FUNC(tmp); |
| } |
| |
| |
| |
| static void |
| i915CullFaceFrontFace(GLcontext * ctx, GLenum unused) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint mode; |
| |
| DBG("%s %d\n", __FUNCTION__, |
| ctx->DrawBuffer ? ctx->DrawBuffer->Name : 0); |
| |
| if (!ctx->Polygon.CullFlag) { |
| mode = S4_CULLMODE_NONE; |
| } |
| else if (ctx->Polygon.CullFaceMode != GL_FRONT_AND_BACK) { |
| mode = S4_CULLMODE_CW; |
| |
| if (ctx->DrawBuffer && ctx->DrawBuffer->Name != 0) |
| mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW); |
| if (ctx->Polygon.CullFaceMode == GL_FRONT) |
| mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW); |
| if (ctx->Polygon.FrontFace != GL_CCW) |
| mode ^= (S4_CULLMODE_CW ^ S4_CULLMODE_CCW); |
| } |
| else { |
| mode = S4_CULLMODE_BOTH; |
| } |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS4] &= ~S4_CULLMODE_MASK; |
| i915->state.Ctx[I915_CTXREG_LIS4] |= mode; |
| } |
| |
| static void |
| i915LineWidth(GLcontext * ctx, GLfloat widthf) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_LINE_WIDTH_MASK; |
| int width; |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| width = (int) (widthf * 2); |
| CLAMP_SELF(width, 1, 0xf); |
| lis4 |= width << S4_LINE_WIDTH_SHIFT; |
| |
| if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS4] = lis4; |
| } |
| } |
| |
| static void |
| i915PointSize(GLcontext * ctx, GLfloat size) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int lis4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_POINT_WIDTH_MASK; |
| GLint point_size = (int) size; |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| CLAMP_SELF(point_size, 1, 255); |
| lis4 |= point_size << S4_POINT_WIDTH_SHIFT; |
| |
| if (lis4 != i915->state.Ctx[I915_CTXREG_LIS4]) { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS4] = lis4; |
| } |
| } |
| |
| |
| /* ============================================================= |
| * Color masks |
| */ |
| |
| static void |
| i915ColorMask(GLcontext * ctx, |
| GLboolean r, GLboolean g, GLboolean b, GLboolean a) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint tmp = i915->state.Ctx[I915_CTXREG_LIS5] & ~S5_WRITEDISABLE_MASK; |
| |
| DBG("%s r(%d) g(%d) b(%d) a(%d)\n", __FUNCTION__, r, g, b, |
| a); |
| |
| if (!r) |
| tmp |= S5_WRITEDISABLE_RED; |
| if (!g) |
| tmp |= S5_WRITEDISABLE_GREEN; |
| if (!b) |
| tmp |= S5_WRITEDISABLE_BLUE; |
| if (!a) |
| tmp |= S5_WRITEDISABLE_ALPHA; |
| |
| if (tmp != i915->state.Ctx[I915_CTXREG_LIS5]) { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS5] = tmp; |
| } |
| } |
| |
| static void |
| update_specular(GLcontext * ctx) |
| { |
| /* A hack to trigger the rebuild of the fragment program. |
| */ |
| intel_context(ctx)->NewGLState |= _NEW_TEXTURE; |
| } |
| |
| static void |
| i915LightModelfv(GLcontext * ctx, GLenum pname, const GLfloat * param) |
| { |
| DBG("%s\n", __FUNCTION__); |
| |
| if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) { |
| update_specular(ctx); |
| } |
| } |
| |
| static void |
| i915ShadeModel(GLcontext * ctx, GLenum mode) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| |
| if (mode == GL_SMOOTH) { |
| i915->state.Ctx[I915_CTXREG_LIS4] &= ~(S4_FLATSHADE_ALPHA | |
| S4_FLATSHADE_COLOR | |
| S4_FLATSHADE_SPECULAR); |
| } |
| else { |
| i915->state.Ctx[I915_CTXREG_LIS4] |= (S4_FLATSHADE_ALPHA | |
| S4_FLATSHADE_COLOR | |
| S4_FLATSHADE_SPECULAR); |
| } |
| } |
| |
| /* ============================================================= |
| * Fog |
| */ |
| void |
| i915_update_fog(GLcontext * ctx) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLenum mode; |
| GLboolean enabled; |
| GLboolean try_pixel_fog; |
| |
| if (ctx->FragmentProgram._Active) { |
| /* Pull in static fog state from program */ |
| mode = ctx->FragmentProgram._Current->FogOption; |
| enabled = (mode != GL_NONE); |
| try_pixel_fog = 0; |
| } |
| else { |
| enabled = ctx->Fog.Enabled; |
| mode = ctx->Fog.Mode; |
| #if 0 |
| /* XXX - DISABLED -- Need ortho fallback */ |
| try_pixel_fog = (ctx->Fog.FogCoordinateSource == GL_FRAGMENT_DEPTH_EXT |
| && ctx->Hint.Fog == GL_NICEST); |
| #else |
| try_pixel_fog = 0; |
| #endif |
| } |
| |
| if (!enabled) { |
| i915->vertex_fog = I915_FOG_NONE; |
| } |
| else if (try_pixel_fog) { |
| I915_STATECHANGE(i915, I915_UPLOAD_FOG); |
| i915->state.Fog[I915_FOGREG_MODE1] &= ~FMC1_FOGFUNC_MASK; |
| i915->vertex_fog = I915_FOG_PIXEL; |
| |
| switch (mode) { |
| case GL_LINEAR: |
| if (ctx->Fog.End <= ctx->Fog.Start) { |
| /* XXX - this won't work with fragment programs. Need to |
| * either fallback or append fog instructions to end of |
| * program in the case of linear fog. |
| */ |
| printf("vertex fog!\n"); |
| i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_VERTEX; |
| i915->vertex_fog = I915_FOG_VERTEX; |
| } |
| else { |
| GLfloat c2 = 1.0 / (ctx->Fog.End - ctx->Fog.Start); |
| GLfloat c1 = ctx->Fog.End * c2; |
| |
| i915->state.Fog[I915_FOGREG_MODE1] &= ~FMC1_C1_MASK; |
| i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_PIXEL_LINEAR; |
| i915->state.Fog[I915_FOGREG_MODE1] |= |
| ((GLuint) (c1 * FMC1_C1_ONE)) & FMC1_C1_MASK; |
| |
| if (i915->state.Fog[I915_FOGREG_MODE1] & FMC1_FOGINDEX_Z) { |
| i915->state.Fog[I915_FOGREG_MODE2] |
| = (GLuint) (c2 * FMC2_C2_ONE); |
| } |
| else { |
| fi_type fi; |
| fi.f = c2; |
| i915->state.Fog[I915_FOGREG_MODE2] = fi.i; |
| } |
| } |
| break; |
| case GL_EXP: |
| i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_PIXEL_EXP; |
| break; |
| case GL_EXP2: |
| i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_PIXEL_EXP2; |
| break; |
| default: |
| break; |
| } |
| } |
| else { /* if (i915->vertex_fog != I915_FOG_VERTEX) */ |
| I915_STATECHANGE(i915, I915_UPLOAD_FOG); |
| i915->state.Fog[I915_FOGREG_MODE1] &= ~FMC1_FOGFUNC_MASK; |
| i915->state.Fog[I915_FOGREG_MODE1] |= FMC1_FOGFUNC_VERTEX; |
| i915->vertex_fog = I915_FOG_VERTEX; |
| } |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| I915_ACTIVESTATE(i915, I915_UPLOAD_FOG, enabled); |
| if (enabled) |
| i915->state.Ctx[I915_CTXREG_LIS5] |= S5_FOG_ENABLE; |
| else |
| i915->state.Ctx[I915_CTXREG_LIS5] &= ~S5_FOG_ENABLE; |
| |
| /* Always enable pixel fog. Vertex fog using fog coord will conflict |
| * with fog code appended onto fragment program. |
| */ |
| _tnl_allow_vertex_fog( ctx, 0 ); |
| _tnl_allow_pixel_fog( ctx, 1 ); |
| } |
| |
| static void |
| i915Fogfv(GLcontext * ctx, GLenum pname, const GLfloat * param) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| |
| switch (pname) { |
| case GL_FOG_COORDINATE_SOURCE_EXT: |
| case GL_FOG_MODE: |
| case GL_FOG_START: |
| case GL_FOG_END: |
| break; |
| |
| case GL_FOG_DENSITY: |
| I915_STATECHANGE(i915, I915_UPLOAD_FOG); |
| |
| if (i915->state.Fog[I915_FOGREG_MODE1] & FMC1_FOGINDEX_Z) { |
| i915->state.Fog[I915_FOGREG_MODE3] = |
| (GLuint) (ctx->Fog.Density * FMC3_D_ONE); |
| } |
| else { |
| fi_type fi; |
| fi.f = ctx->Fog.Density; |
| i915->state.Fog[I915_FOGREG_MODE3] = fi.i; |
| } |
| break; |
| |
| case GL_FOG_COLOR: |
| I915_STATECHANGE(i915, I915_UPLOAD_FOG); |
| i915->state.Fog[I915_FOGREG_COLOR] = |
| (_3DSTATE_FOG_COLOR_CMD | |
| ((GLubyte) (ctx->Fog.Color[0] * 255.0F) << 16) | |
| ((GLubyte) (ctx->Fog.Color[1] * 255.0F) << 8) | |
| ((GLubyte) (ctx->Fog.Color[2] * 255.0F) << 0)); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static void |
| i915Hint(GLcontext * ctx, GLenum target, GLenum state) |
| { |
| switch (target) { |
| case GL_FOG_HINT: |
| break; |
| default: |
| break; |
| } |
| } |
| |
| /* ============================================================= |
| */ |
| |
| static void |
| i915Enable(GLcontext * ctx, GLenum cap, GLboolean state) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| |
| switch (cap) { |
| case GL_TEXTURE_2D: |
| break; |
| |
| case GL_LIGHTING: |
| case GL_COLOR_SUM: |
| update_specular(ctx); |
| break; |
| |
| case GL_ALPHA_TEST: |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| if (state) |
| i915->state.Ctx[I915_CTXREG_LIS6] |= S6_ALPHA_TEST_ENABLE; |
| else |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_ALPHA_TEST_ENABLE; |
| break; |
| |
| case GL_BLEND: |
| i915EvalLogicOpBlendState(ctx); |
| break; |
| |
| case GL_COLOR_LOGIC_OP: |
| i915EvalLogicOpBlendState(ctx); |
| |
| /* Logicop doesn't seem to work at 16bpp: |
| */ |
| if (ctx->Visual.rgbBits == 16) |
| FALLBACK(&i915->intel, I915_FALLBACK_LOGICOP, state); |
| break; |
| |
| case GL_FRAGMENT_PROGRAM_ARB: |
| break; |
| |
| case GL_DITHER: |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| if (state) |
| i915->state.Ctx[I915_CTXREG_LIS5] |= S5_COLOR_DITHER_ENABLE; |
| else |
| i915->state.Ctx[I915_CTXREG_LIS5] &= ~S5_COLOR_DITHER_ENABLE; |
| break; |
| |
| case GL_DEPTH_TEST: |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| if (state) |
| i915->state.Ctx[I915_CTXREG_LIS6] |= S6_DEPTH_TEST_ENABLE; |
| else |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~S6_DEPTH_TEST_ENABLE; |
| |
| i915DepthMask(ctx, ctx->Depth.Mask); |
| break; |
| |
| case GL_SCISSOR_TEST: |
| I915_STATECHANGE(i915, I915_UPLOAD_BUFFERS); |
| if (state) |
| i915->state.Buffer[I915_DESTREG_SENABLE] = |
| (_3DSTATE_SCISSOR_ENABLE_CMD | ENABLE_SCISSOR_RECT); |
| else |
| i915->state.Buffer[I915_DESTREG_SENABLE] = |
| (_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT); |
| break; |
| |
| case GL_LINE_SMOOTH: |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| if (state) |
| i915->state.Ctx[I915_CTXREG_LIS4] |= S4_LINE_ANTIALIAS_ENABLE; |
| else |
| i915->state.Ctx[I915_CTXREG_LIS4] &= ~S4_LINE_ANTIALIAS_ENABLE; |
| break; |
| |
| case GL_FOG: |
| break; |
| |
| case GL_CULL_FACE: |
| i915CullFaceFrontFace(ctx, 0); |
| break; |
| |
| case GL_STENCIL_TEST: |
| { |
| GLboolean hw_stencil = GL_FALSE; |
| if (ctx->DrawBuffer) { |
| struct intel_renderbuffer *irbStencil |
| = intel_get_renderbuffer(ctx->DrawBuffer, BUFFER_STENCIL); |
| hw_stencil = (irbStencil && irbStencil->region); |
| } |
| if (hw_stencil) { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| if (state) |
| i915->state.Ctx[I915_CTXREG_LIS5] |= (S5_STENCIL_TEST_ENABLE | |
| S5_STENCIL_WRITE_ENABLE); |
| else |
| i915->state.Ctx[I915_CTXREG_LIS5] &= ~(S5_STENCIL_TEST_ENABLE | |
| S5_STENCIL_WRITE_ENABLE); |
| } |
| else { |
| FALLBACK(&i915->intel, I915_FALLBACK_STENCIL, state); |
| } |
| } |
| break; |
| |
| case GL_POLYGON_STIPPLE: |
| /* The stipple command worked on my 855GM box, but not my 845G. |
| * I'll do more testing later to find out exactly which hardware |
| * supports it. Disabled for now. |
| */ |
| if (i915->intel.hw_stipple && |
| i915->intel.reduced_primitive == GL_TRIANGLES) { |
| I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE); |
| if (state) |
| i915->state.Stipple[I915_STPREG_ST1] |= ST1_ENABLE; |
| else |
| i915->state.Stipple[I915_STPREG_ST1] &= ~ST1_ENABLE; |
| } |
| break; |
| |
| case GL_POLYGON_SMOOTH: |
| break; |
| |
| case GL_POINT_SMOOTH: |
| break; |
| |
| default: |
| ; |
| } |
| } |
| |
| |
| static void |
| i915_init_packets(struct i915_context *i915) |
| { |
| /* Zero all state */ |
| memset(&i915->state, 0, sizeof(i915->state)); |
| |
| |
| { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| /* Probably don't want to upload all this stuff every time one |
| * piece changes. |
| */ |
| i915->state.Ctx[I915_CTXREG_LI] = (_3DSTATE_LOAD_STATE_IMMEDIATE_1 | |
| I1_LOAD_S(2) | |
| I1_LOAD_S(4) | |
| I1_LOAD_S(5) | I1_LOAD_S(6) | (3)); |
| i915->state.Ctx[I915_CTXREG_LIS2] = 0; |
| i915->state.Ctx[I915_CTXREG_LIS4] = 0; |
| i915->state.Ctx[I915_CTXREG_LIS5] = 0; |
| |
| if (i915->intel.ctx.Visual.rgbBits == 16) |
| i915->state.Ctx[I915_CTXREG_LIS5] |= S5_COLOR_DITHER_ENABLE; |
| |
| |
| i915->state.Ctx[I915_CTXREG_LIS6] = (S6_COLOR_WRITE_ENABLE | |
| (2 << S6_TRISTRIP_PV_SHIFT)); |
| |
| i915->state.Ctx[I915_CTXREG_STATE4] = (_3DSTATE_MODES_4_CMD | |
| ENABLE_LOGIC_OP_FUNC | |
| LOGIC_OP_FUNC(LOGICOP_COPY) | |
| ENABLE_STENCIL_TEST_MASK | |
| STENCIL_TEST_MASK(0xff) | |
| ENABLE_STENCIL_WRITE_MASK | |
| STENCIL_WRITE_MASK(0xff)); |
| |
| i915->state.Ctx[I915_CTXREG_IAB] = |
| (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE | |
| IAB_MODIFY_FUNC | IAB_MODIFY_SRC_FACTOR | IAB_MODIFY_DST_FACTOR); |
| |
| i915->state.Ctx[I915_CTXREG_BLENDCOLOR0] = |
| _3DSTATE_CONST_BLEND_COLOR_CMD; |
| i915->state.Ctx[I915_CTXREG_BLENDCOLOR1] = 0; |
| |
| } |
| |
| { |
| I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE); |
| i915->state.Stipple[I915_STPREG_ST0] = _3DSTATE_STIPPLE; |
| } |
| |
| |
| { |
| I915_STATECHANGE(i915, I915_UPLOAD_FOG); |
| i915->state.Fog[I915_FOGREG_MODE0] = _3DSTATE_FOG_MODE_CMD; |
| i915->state.Fog[I915_FOGREG_MODE1] = (FMC1_FOGFUNC_MODIFY_ENABLE | |
| FMC1_FOGFUNC_VERTEX | |
| FMC1_FOGINDEX_MODIFY_ENABLE | |
| FMC1_FOGINDEX_W | |
| FMC1_C1_C2_MODIFY_ENABLE | |
| FMC1_DENSITY_MODIFY_ENABLE); |
| i915->state.Fog[I915_FOGREG_COLOR] = _3DSTATE_FOG_COLOR_CMD; |
| } |
| |
| { |
| i915->state.Buffer[I915_DESTREG_DV0] = _3DSTATE_DST_BUF_VARS_CMD; |
| |
| /* scissor */ |
| i915->state.Buffer[I915_DESTREG_SENABLE] = |
| (_3DSTATE_SCISSOR_ENABLE_CMD | DISABLE_SCISSOR_RECT); |
| i915->state.Buffer[I915_DESTREG_SR0] = _3DSTATE_SCISSOR_RECT_0_CMD; |
| i915->state.Buffer[I915_DESTREG_SR1] = 0; |
| i915->state.Buffer[I915_DESTREG_SR2] = 0; |
| } |
| |
| |
| #if 0 |
| { |
| I915_STATECHANGE(i915, I915_UPLOAD_DEFAULTS); |
| i915->state.Default[I915_DEFREG_C0] = _3DSTATE_DEFAULT_DIFFUSE; |
| i915->state.Default[I915_DEFREG_C1] = 0; |
| i915->state.Default[I915_DEFREG_S0] = _3DSTATE_DEFAULT_SPECULAR; |
| i915->state.Default[I915_DEFREG_S1] = 0; |
| i915->state.Default[I915_DEFREG_Z0] = _3DSTATE_DEFAULT_Z; |
| i915->state.Default[I915_DEFREG_Z1] = 0; |
| } |
| #endif |
| |
| |
| /* These will be emitted every at the head of every buffer, unless |
| * we get hardware contexts working. |
| */ |
| i915->state.active = (I915_UPLOAD_PROGRAM | |
| I915_UPLOAD_STIPPLE | |
| I915_UPLOAD_CTX | |
| I915_UPLOAD_BUFFERS | I915_UPLOAD_INVARIENT); |
| } |
| |
| void |
| i915InitStateFunctions(struct dd_function_table *functions) |
| { |
| functions->AlphaFunc = i915AlphaFunc; |
| functions->BlendColor = i915BlendColor; |
| functions->BlendEquationSeparate = i915BlendEquationSeparate; |
| functions->BlendFuncSeparate = i915BlendFuncSeparate; |
| functions->ColorMask = i915ColorMask; |
| functions->CullFace = i915CullFaceFrontFace; |
| functions->DepthFunc = i915DepthFunc; |
| functions->DepthMask = i915DepthMask; |
| functions->Enable = i915Enable; |
| functions->Fogfv = i915Fogfv; |
| functions->FrontFace = i915CullFaceFrontFace; |
| functions->Hint = i915Hint; |
| functions->LightModelfv = i915LightModelfv; |
| functions->LineWidth = i915LineWidth; |
| functions->LogicOpcode = i915LogicOp; |
| functions->PointSize = i915PointSize; |
| functions->PolygonStipple = i915PolygonStipple; |
| functions->Scissor = i915Scissor; |
| functions->ShadeModel = i915ShadeModel; |
| functions->StencilFuncSeparate = i915StencilFuncSeparate; |
| functions->StencilMaskSeparate = i915StencilMaskSeparate; |
| functions->StencilOpSeparate = i915StencilOpSeparate; |
| } |
| |
| |
| void |
| i915InitState(struct i915_context *i915) |
| { |
| GLcontext *ctx = &i915->intel.ctx; |
| |
| i915_init_packets(i915); |
| |
| _mesa_init_driver_state(ctx); |
| |
| memcpy(&i915->initial, &i915->state, sizeof(i915->state)); |
| i915->current = &i915->state; |
| } |
