| /************************************************************************** |
| * |
| * 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 "main/glheader.h" |
| #include "main/context.h" |
| #include "main/macros.h" |
| #include "main/enums.h" |
| #include "main/fbobject.h" |
| #include "main/dd.h" |
| #include "main/state.h" |
| #include "tnl/tnl.h" |
| #include "tnl/t_context.h" |
| |
| #include "drivers/common/driverfuncs.h" |
| |
| #include "intel_fbo.h" |
| #include "intel_screen.h" |
| #include "intel_batchbuffer.h" |
| #include "intel_buffers.h" |
| |
| #include "i915_context.h" |
| #include "i915_reg.h" |
| |
| #define FILE_DEBUG_FLAG DEBUG_STATE |
| |
| void |
| i915_update_stencil(struct gl_context * ctx) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint front_ref, front_writemask, front_mask; |
| GLenum front_func, front_fail, front_pass_z_fail, front_pass_z_pass; |
| GLuint back_ref, back_writemask, back_mask; |
| GLenum back_func, back_fail, back_pass_z_fail, back_pass_z_pass; |
| GLuint dirty = 0; |
| |
| /* The 915 considers CW to be "front" for two-sided stencil, so choose |
| * appropriately. |
| */ |
| /* _NEW_POLYGON | _NEW_STENCIL */ |
| if (ctx->Polygon.FrontFace == GL_CW) { |
| front_ref = ctx->Stencil.Ref[0]; |
| front_mask = ctx->Stencil.ValueMask[0]; |
| front_writemask = ctx->Stencil.WriteMask[0]; |
| front_func = ctx->Stencil.Function[0]; |
| front_fail = ctx->Stencil.FailFunc[0]; |
| front_pass_z_fail = ctx->Stencil.ZFailFunc[0]; |
| front_pass_z_pass = ctx->Stencil.ZPassFunc[0]; |
| back_ref = ctx->Stencil.Ref[ctx->Stencil._BackFace]; |
| back_mask = ctx->Stencil.ValueMask[ctx->Stencil._BackFace]; |
| back_writemask = ctx->Stencil.WriteMask[ctx->Stencil._BackFace]; |
| back_func = ctx->Stencil.Function[ctx->Stencil._BackFace]; |
| back_fail = ctx->Stencil.FailFunc[ctx->Stencil._BackFace]; |
| back_pass_z_fail = ctx->Stencil.ZFailFunc[ctx->Stencil._BackFace]; |
| back_pass_z_pass = ctx->Stencil.ZPassFunc[ctx->Stencil._BackFace]; |
| } else { |
| front_ref = ctx->Stencil.Ref[ctx->Stencil._BackFace]; |
| front_mask = ctx->Stencil.ValueMask[ctx->Stencil._BackFace]; |
| front_writemask = ctx->Stencil.WriteMask[ctx->Stencil._BackFace]; |
| front_func = ctx->Stencil.Function[ctx->Stencil._BackFace]; |
| front_fail = ctx->Stencil.FailFunc[ctx->Stencil._BackFace]; |
| front_pass_z_fail = ctx->Stencil.ZFailFunc[ctx->Stencil._BackFace]; |
| front_pass_z_pass = ctx->Stencil.ZPassFunc[ctx->Stencil._BackFace]; |
| back_ref = ctx->Stencil.Ref[0]; |
| back_mask = ctx->Stencil.ValueMask[0]; |
| back_writemask = ctx->Stencil.WriteMask[0]; |
| back_func = ctx->Stencil.Function[0]; |
| back_fail = ctx->Stencil.FailFunc[0]; |
| back_pass_z_fail = ctx->Stencil.ZFailFunc[0]; |
| back_pass_z_pass = ctx->Stencil.ZPassFunc[0]; |
| } |
| #define set_ctx_bits(reg, mask, set) do{ \ |
| GLuint dw = i915->state.Ctx[reg]; \ |
| dw &= ~(mask); \ |
| dw |= (set); \ |
| dirty |= dw != i915->state.Ctx[reg]; \ |
| i915->state.Ctx[reg] = dw; \ |
| } while(0) |
| |
| /* Set front state. */ |
| set_ctx_bits(I915_CTXREG_STATE4, |
| MODE4_ENABLE_STENCIL_TEST_MASK | |
| MODE4_ENABLE_STENCIL_WRITE_MASK, |
| ENABLE_STENCIL_TEST_MASK | |
| ENABLE_STENCIL_WRITE_MASK | |
| STENCIL_TEST_MASK(front_mask) | |
| STENCIL_WRITE_MASK(front_writemask)); |
| |
| set_ctx_bits(I915_CTXREG_LIS5, |
| S5_STENCIL_REF_MASK | |
| S5_STENCIL_TEST_FUNC_MASK | |
| S5_STENCIL_FAIL_MASK | |
| S5_STENCIL_PASS_Z_FAIL_MASK | |
| S5_STENCIL_PASS_Z_PASS_MASK, |
| (front_ref << S5_STENCIL_REF_SHIFT) | |
| (intel_translate_compare_func(front_func) << S5_STENCIL_TEST_FUNC_SHIFT) | |
| (intel_translate_stencil_op(front_fail) << S5_STENCIL_FAIL_SHIFT) | |
| (intel_translate_stencil_op(front_pass_z_fail) << |
| S5_STENCIL_PASS_Z_FAIL_SHIFT) | |
| (intel_translate_stencil_op(front_pass_z_pass) << |
| S5_STENCIL_PASS_Z_PASS_SHIFT)); |
| |
| /* Set back state if different from front. */ |
| if (ctx->Stencil._TestTwoSide) { |
| set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS, |
| BFO_STENCIL_REF_MASK | |
| BFO_STENCIL_TEST_MASK | |
| BFO_STENCIL_FAIL_MASK | |
| BFO_STENCIL_PASS_Z_FAIL_MASK | |
| BFO_STENCIL_PASS_Z_PASS_MASK, |
| BFO_STENCIL_TWO_SIDE | |
| (back_ref << BFO_STENCIL_REF_SHIFT) | |
| (intel_translate_compare_func(back_func) << BFO_STENCIL_TEST_SHIFT) | |
| (intel_translate_stencil_op(back_fail) << BFO_STENCIL_FAIL_SHIFT) | |
| (intel_translate_stencil_op(back_pass_z_fail) << |
| BFO_STENCIL_PASS_Z_FAIL_SHIFT) | |
| (intel_translate_stencil_op(back_pass_z_pass) << |
| BFO_STENCIL_PASS_Z_PASS_SHIFT)); |
| |
| set_ctx_bits(I915_CTXREG_BF_STENCIL_MASKS, |
| BFM_STENCIL_TEST_MASK_MASK | |
| BFM_STENCIL_WRITE_MASK_MASK, |
| BFM_STENCIL_TEST_MASK(back_mask) | |
| BFM_STENCIL_WRITE_MASK(back_writemask)); |
| } else { |
| set_ctx_bits(I915_CTXREG_BF_STENCIL_OPS, |
| BFO_STENCIL_TWO_SIDE, 0); |
| } |
| |
| #undef set_ctx_bits |
| |
| if (dirty) |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| |
| static void |
| i915StencilFuncSeparate(struct gl_context * ctx, GLenum face, GLenum func, GLint ref, |
| GLuint mask) |
| { |
| } |
| |
| static void |
| i915StencilMaskSeparate(struct gl_context * ctx, GLenum face, GLuint mask) |
| { |
| } |
| |
| static void |
| i915StencilOpSeparate(struct gl_context * ctx, GLenum face, GLenum fail, GLenum zfail, |
| GLenum zpass) |
| { |
| } |
| |
| static void |
| i915AlphaFunc(struct gl_context * ctx, GLenum func, GLfloat ref) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int test = intel_translate_compare_func(func); |
| GLubyte refByte; |
| GLuint dw; |
| |
| UNCLAMPED_FLOAT_TO_UBYTE(refByte, ref); |
| |
| dw = i915->state.Ctx[I915_CTXREG_LIS6]; |
| dw &= ~(S6_ALPHA_TEST_FUNC_MASK | S6_ALPHA_REF_MASK); |
| dw |= ((test << S6_ALPHA_TEST_FUNC_SHIFT) | |
| (((GLuint) refByte) << S6_ALPHA_REF_SHIFT)); |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| i915->state.Ctx[I915_CTXREG_LIS6] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| } |
| |
| /* 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(struct gl_context * ctx) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint dw0, dw1; |
| |
| dw0 = i915->state.Ctx[I915_CTXREG_LIS5]; |
| dw1 = i915->state.Ctx[I915_CTXREG_LIS6]; |
| |
| if (ctx->Color.ColorLogicOpEnabled) { |
| dw0 |= S5_LOGICOP_ENABLE; |
| dw1 &= ~S6_CBUF_BLEND_ENABLE; |
| } |
| else { |
| dw0 &= ~S5_LOGICOP_ENABLE; |
| |
| if (ctx->Color.BlendEnabled) { |
| dw1 |= S6_CBUF_BLEND_ENABLE; |
| } |
| else { |
| dw1 &= ~S6_CBUF_BLEND_ENABLE; |
| } |
| } |
| if (dw0 != i915->state.Ctx[I915_CTXREG_LIS5] || |
| dw1 != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| i915->state.Ctx[I915_CTXREG_LIS5] = dw0; |
| i915->state.Ctx[I915_CTXREG_LIS6] = dw1; |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| } |
| |
| static void |
| i915BlendColor(struct gl_context * ctx, const GLfloat color[4]) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLubyte r, g, b, a; |
| GLuint dw; |
| |
| 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]); |
| |
| dw = (a << 24) | (r << 16) | (g << 8) | b; |
| if (dw != i915->state.Blend[I915_BLENDREG_BLENDCOLOR1]) { |
| i915->state.Blend[I915_BLENDREG_BLENDCOLOR1] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_BLEND); |
| } |
| } |
| |
| |
| #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(struct gl_context * ctx) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint iab = (i915->state.Blend[I915_BLENDREG_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.Blend[0].EquationRGB; |
| GLuint eqA = ctx->Color.Blend[0].EquationA; |
| GLuint srcRGB = ctx->Color.Blend[0].SrcRGB; |
| GLuint dstRGB = ctx->Color.Blend[0].DstRGB; |
| GLuint srcA = ctx->Color.Blend[0].SrcA; |
| GLuint dstA = ctx->Color.Blend[0].DstA; |
| |
| 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.Blend[I915_BLENDREG_IAB]) { |
| i915->state.Blend[I915_BLENDREG_IAB] = iab; |
| I915_STATECHANGE(i915, I915_UPLOAD_BLEND); |
| } |
| if (lis6 != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| i915->state.Ctx[I915_CTXREG_LIS6] = lis6; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| |
| /* This will catch a logicop blend equation */ |
| i915EvalLogicOpBlendState(ctx); |
| } |
| |
| |
| static void |
| i915BlendFuncSeparate(struct gl_context * ctx, GLenum srcRGB, |
| GLenum dstRGB, GLenum srcA, GLenum dstA) |
| { |
| i915UpdateBlendState(ctx); |
| } |
| |
| |
| static void |
| i915BlendEquationSeparate(struct gl_context * ctx, GLenum eqRGB, GLenum eqA) |
| { |
| i915UpdateBlendState(ctx); |
| } |
| |
| |
| static void |
| i915DepthFunc(struct gl_context * ctx, GLenum func) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| int test = intel_translate_compare_func(func); |
| GLuint dw; |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| dw = i915->state.Ctx[I915_CTXREG_LIS6]; |
| dw &= ~S6_DEPTH_TEST_FUNC_MASK; |
| dw |= test << S6_DEPTH_TEST_FUNC_SHIFT; |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS6] = dw; |
| } |
| } |
| |
| static void |
| i915DepthMask(struct gl_context * ctx, GLboolean flag) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint dw; |
| |
| DBG("%s flag (%d)\n", __FUNCTION__, flag); |
| |
| if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits) |
| flag = false; |
| |
| dw = i915->state.Ctx[I915_CTXREG_LIS6]; |
| if (flag && ctx->Depth.Test) |
| dw |= S6_DEPTH_WRITE_ENABLE; |
| else |
| dw &= ~S6_DEPTH_WRITE_ENABLE; |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS6] = dw; |
| } |
| } |
| |
| |
| |
| /** |
| * Update the viewport transformation matrix. Depends on: |
| * - viewport pos/size |
| * - depthrange |
| * - window pos/size or FBO size |
| */ |
| void |
| intelCalcViewport(struct gl_context * ctx) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| |
| if (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { |
| _math_matrix_viewport(&intel->ViewportMatrix, |
| ctx->Viewport.X, |
| ctx->DrawBuffer->Height - ctx->Viewport.Y, |
| ctx->Viewport.Width, |
| -ctx->Viewport.Height, |
| ctx->Viewport.Near, |
| ctx->Viewport.Far, |
| 1.0); |
| } else { |
| _math_matrix_viewport(&intel->ViewportMatrix, |
| ctx->Viewport.X, |
| ctx->Viewport.Y, |
| ctx->Viewport.Width, |
| ctx->Viewport.Height, |
| ctx->Viewport.Near, |
| ctx->Viewport.Far, |
| 1.0); |
| } |
| } |
| |
| |
| /** Called from ctx->Driver.Viewport() */ |
| static void |
| i915Viewport(struct gl_context * ctx, |
| GLint x, GLint y, GLsizei width, GLsizei height) |
| { |
| intelCalcViewport(ctx); |
| } |
| |
| |
| /** Called from ctx->Driver.DepthRange() */ |
| static void |
| i915DepthRange(struct gl_context * ctx, GLclampd nearval, GLclampd farval) |
| { |
| intelCalcViewport(ctx); |
| } |
| |
| |
| /* ============================================================= |
| * Polygon stipple |
| * |
| * The i915 supports a 4x4 stipple natively, GL wants 32x32. |
| * Fortunately stipple is usually a repeating pattern. |
| */ |
| static void |
| i915PolygonStipple(struct gl_context * 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(struct gl_context * 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 (_mesa_is_winsys_fbo(ctx->DrawBuffer)) { |
| 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(struct gl_context * 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(struct gl_context * ctx, GLenum unused) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint mode, dw; |
| |
| 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 && _mesa_is_user_fbo(ctx->DrawBuffer)) |
| 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; |
| } |
| |
| dw = i915->state.Ctx[I915_CTXREG_LIS4]; |
| dw &= ~S4_CULLMODE_MASK; |
| dw |= mode; |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS4]) { |
| i915->state.Ctx[I915_CTXREG_LIS4] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| } |
| |
| static void |
| i915LineWidth(struct gl_context * 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); |
| width = CLAMP(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(struct gl_context * 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) round(size); |
| |
| DBG("%s\n", __FUNCTION__); |
| |
| point_size = CLAMP(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; |
| } |
| } |
| |
| |
| static void |
| i915PointParameterfv(struct gl_context * ctx, GLenum pname, const GLfloat *params) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| |
| switch (pname) { |
| case GL_POINT_SPRITE_COORD_ORIGIN: |
| /* This could be supported, but it would require modifying the fragment |
| * program to invert the y component of the texture coordinate by |
| * inserting a 'SUB tc.y, {1.0}.xxxx, tc' instruction. |
| */ |
| FALLBACK(&i915->intel, I915_FALLBACK_POINT_SPRITE_COORD_ORIGIN, |
| (params[0] != GL_UPPER_LEFT)); |
| break; |
| } |
| } |
| |
| void |
| i915_update_sprite_point_enable(struct gl_context *ctx) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| /* _NEW_PROGRAM */ |
| struct i915_fragment_program *p = |
| (struct i915_fragment_program *) ctx->FragmentProgram._Current; |
| const GLbitfield64 inputsRead = p->FragProg.Base.InputsRead; |
| struct i915_context *i915 = i915_context(ctx); |
| GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK; |
| int i; |
| GLuint coord_replace_bits = 0x0; |
| GLuint tex_coord_unit_bits = 0x0; |
| |
| for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) { |
| /* _NEW_POINT */ |
| if (ctx->Point.CoordReplace[i] && ctx->Point.PointSprite) |
| coord_replace_bits |= (1 << i); |
| if (inputsRead & FRAG_BIT_TEX(i)) |
| tex_coord_unit_bits |= (1 << i); |
| } |
| |
| /* |
| * Here we can't enable the SPRITE_POINT_ENABLE bit when the mis-match |
| * of tex_coord_unit_bits and coord_replace_bits, or this will make all |
| * the other non-point-sprite coords(like varying inputs, as we now use |
| * tex coord to implement varying inputs) be replaced to value (0, 0)-(1, 1). |
| * |
| * Thus, do fallback when needed. |
| */ |
| FALLBACK(intel, I915_FALLBACK_COORD_REPLACE, |
| coord_replace_bits && coord_replace_bits != tex_coord_unit_bits); |
| |
| s4 &= ~S4_SPRITE_POINT_ENABLE; |
| s4 |= (coord_replace_bits && coord_replace_bits == tex_coord_unit_bits) ? |
| S4_SPRITE_POINT_ENABLE : 0; |
| if (s4 != i915->state.Ctx[I915_CTXREG_LIS4]) { |
| i915->state.Ctx[I915_CTXREG_LIS4] = s4; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| } |
| |
| |
| /* ============================================================= |
| * Color masks |
| */ |
| |
| static void |
| i915ColorMask(struct gl_context * 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(struct gl_context * ctx) |
| { |
| /* A hack to trigger the rebuild of the fragment program. |
| */ |
| intel_context(ctx)->NewGLState |= _NEW_TEXTURE; |
| } |
| |
| static void |
| i915LightModelfv(struct gl_context * ctx, GLenum pname, const GLfloat * param) |
| { |
| DBG("%s\n", __FUNCTION__); |
| |
| if (pname == GL_LIGHT_MODEL_COLOR_CONTROL) { |
| update_specular(ctx); |
| } |
| } |
| |
| static void |
| i915ShadeModel(struct gl_context * 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 |
| * |
| * This empty function remains because _mesa_init_driver_state calls |
| * dd_function_table::Fogfv unconditionally. We have to have some function |
| * there so that it doesn't try to call a NULL pointer. |
| */ |
| static void |
| i915Fogfv(struct gl_context * ctx, GLenum pname, const GLfloat * param) |
| { |
| (void) ctx; |
| (void) pname; |
| (void) param; |
| } |
| |
| /* ============================================================= |
| */ |
| |
| static void |
| i915Enable(struct gl_context * ctx, GLenum cap, GLboolean state) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| GLuint dw; |
| |
| switch (cap) { |
| case GL_TEXTURE_2D: |
| break; |
| |
| case GL_LIGHTING: |
| case GL_COLOR_SUM: |
| update_specular(ctx); |
| break; |
| |
| case GL_ALPHA_TEST: |
| dw = i915->state.Ctx[I915_CTXREG_LIS6]; |
| if (state) |
| dw |= S6_ALPHA_TEST_ENABLE; |
| else |
| dw &= ~S6_ALPHA_TEST_ENABLE; |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| i915->state.Ctx[I915_CTXREG_LIS6] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| 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: |
| dw = i915->state.Ctx[I915_CTXREG_LIS5]; |
| if (state) |
| dw |= S5_COLOR_DITHER_ENABLE; |
| else |
| dw &= ~S5_COLOR_DITHER_ENABLE; |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS5]) { |
| i915->state.Ctx[I915_CTXREG_LIS5] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| break; |
| |
| case GL_DEPTH_TEST: |
| dw = i915->state.Ctx[I915_CTXREG_LIS6]; |
| |
| if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.depthBits) |
| state = false; |
| |
| if (state) |
| dw |= S6_DEPTH_TEST_ENABLE; |
| else |
| dw &= ~S6_DEPTH_TEST_ENABLE; |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS6]) { |
| i915->state.Ctx[I915_CTXREG_LIS6] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| |
| 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: |
| dw = i915->state.Ctx[I915_CTXREG_LIS4]; |
| if (state) |
| dw |= S4_LINE_ANTIALIAS_ENABLE; |
| else |
| dw &= ~S4_LINE_ANTIALIAS_ENABLE; |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS4]) { |
| i915->state.Ctx[I915_CTXREG_LIS4] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| break; |
| |
| case GL_CULL_FACE: |
| i915CullFaceFrontFace(ctx, 0); |
| break; |
| |
| case GL_STENCIL_TEST: |
| if (!ctx->DrawBuffer || !ctx->DrawBuffer->Visual.stencilBits) |
| state = false; |
| |
| dw = i915->state.Ctx[I915_CTXREG_LIS5]; |
| if (state) |
| dw |= (S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE); |
| else |
| dw &= ~(S5_STENCIL_TEST_ENABLE | S5_STENCIL_WRITE_ENABLE); |
| if (dw != i915->state.Ctx[I915_CTXREG_LIS5]) { |
| i915->state.Ctx[I915_CTXREG_LIS5] = dw; |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| } |
| 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_SPRITE: |
| /* Handle it at i915_update_sprite_point_enable () */ |
| 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); |
| I915_STATECHANGE(i915, I915_UPLOAD_BLEND); |
| /* 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.Blend[I915_BLENDREG_IAB] = |
| (_3DSTATE_INDEPENDENT_ALPHA_BLEND_CMD | IAB_MODIFY_ENABLE | |
| IAB_MODIFY_FUNC | IAB_MODIFY_SRC_FACTOR | IAB_MODIFY_DST_FACTOR); |
| |
| i915->state.Blend[I915_BLENDREG_BLENDCOLOR0] = |
| _3DSTATE_CONST_BLEND_COLOR_CMD; |
| i915->state.Blend[I915_BLENDREG_BLENDCOLOR1] = 0; |
| |
| i915->state.Ctx[I915_CTXREG_BF_STENCIL_MASKS] = |
| _3DSTATE_BACKFACE_STENCIL_MASKS | |
| BFM_ENABLE_STENCIL_TEST_MASK | |
| BFM_ENABLE_STENCIL_WRITE_MASK | |
| (0xff << BFM_STENCIL_WRITE_MASK_SHIFT) | |
| (0xff << BFM_STENCIL_TEST_MASK_SHIFT); |
| i915->state.Ctx[I915_CTXREG_BF_STENCIL_OPS] = |
| _3DSTATE_BACKFACE_STENCIL_OPS | |
| BFO_ENABLE_STENCIL_REF | |
| BFO_ENABLE_STENCIL_FUNCS | |
| BFO_ENABLE_STENCIL_TWO_SIDE; |
| } |
| |
| { |
| I915_STATECHANGE(i915, I915_UPLOAD_STIPPLE); |
| i915->state.Stipple[I915_STPREG_ST0] = _3DSTATE_STIPPLE; |
| } |
| |
| { |
| 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; |
| } |
| |
| i915->state.RasterRules[I915_RASTER_RULES] = _3DSTATE_RASTER_RULES_CMD | |
| ENABLE_POINT_RASTER_RULE | |
| OGL_POINT_RASTER_RULE | |
| ENABLE_LINE_STRIP_PROVOKE_VRTX | |
| ENABLE_TRI_FAN_PROVOKE_VRTX | |
| LINE_STRIP_PROVOKE_VRTX(1) | |
| TRI_FAN_PROVOKE_VRTX(2) | ENABLE_TEXKILL_3D_4D | TEXKILL_4D; |
| |
| #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_BLEND | |
| I915_UPLOAD_BUFFERS | |
| I915_UPLOAD_INVARIENT | |
| I915_UPLOAD_RASTER_RULES); |
| } |
| |
| void |
| i915_update_provoking_vertex(struct gl_context * ctx) |
| { |
| struct i915_context *i915 = I915_CONTEXT(ctx); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_CTX); |
| i915->state.Ctx[I915_CTXREG_LIS6] &= ~(S6_TRISTRIP_PV_MASK); |
| |
| I915_STATECHANGE(i915, I915_UPLOAD_RASTER_RULES); |
| i915->state.RasterRules[I915_RASTER_RULES] &= ~(LINE_STRIP_PROVOKE_VRTX_MASK | |
| TRI_FAN_PROVOKE_VRTX_MASK); |
| |
| /* _NEW_LIGHT */ |
| if (ctx->Light.ProvokingVertex == GL_LAST_VERTEX_CONVENTION) { |
| i915->state.RasterRules[I915_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(1) | |
| TRI_FAN_PROVOKE_VRTX(2)); |
| i915->state.Ctx[I915_CTXREG_LIS6] |= (2 << S6_TRISTRIP_PV_SHIFT); |
| } else { |
| i915->state.RasterRules[I915_RASTER_RULES] |= (LINE_STRIP_PROVOKE_VRTX(0) | |
| TRI_FAN_PROVOKE_VRTX(1)); |
| i915->state.Ctx[I915_CTXREG_LIS6] |= (0 << S6_TRISTRIP_PV_SHIFT); |
| } |
| } |
| |
| /* Fallback to swrast for select and feedback. |
| */ |
| static void |
| i915RenderMode(struct gl_context *ctx, GLenum mode) |
| { |
| struct intel_context *intel = intel_context(ctx); |
| FALLBACK(intel, INTEL_FALLBACK_RENDERMODE, (mode != GL_RENDER)); |
| } |
| |
| 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->LightModelfv = i915LightModelfv; |
| functions->LineWidth = i915LineWidth; |
| functions->LogicOpcode = i915LogicOp; |
| functions->PointSize = i915PointSize; |
| functions->PointParameterfv = i915PointParameterfv; |
| functions->PolygonStipple = i915PolygonStipple; |
| functions->RenderMode = i915RenderMode; |
| functions->Scissor = i915Scissor; |
| functions->ShadeModel = i915ShadeModel; |
| functions->StencilFuncSeparate = i915StencilFuncSeparate; |
| functions->StencilMaskSeparate = i915StencilMaskSeparate; |
| functions->StencilOpSeparate = i915StencilOpSeparate; |
| functions->DepthRange = i915DepthRange; |
| functions->Viewport = i915Viewport; |
| } |
| |
| |
| void |
| i915InitState(struct i915_context *i915) |
| { |
| struct gl_context *ctx = &i915->intel.ctx; |
| |
| i915_init_packets(i915); |
| |
| _mesa_init_driver_state(ctx); |
| } |