diff options
Diffstat (limited to 'src/mesa/drivers/dri/intel/intel_pixel.c')
| -rw-r--r-- | src/mesa/drivers/dri/intel/intel_pixel.c | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_pixel.c b/src/mesa/drivers/dri/intel/intel_pixel.c new file mode 100644 index 0000000000..5e32288844 --- /dev/null +++ b/src/mesa/drivers/dri/intel/intel_pixel.c @@ -0,0 +1,354 @@ +/************************************************************************** + * + * Copyright 2006 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 portionsalloc + * 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/enums.h" +#include "main/state.h" +#include "main/context.h" +#include "main/enable.h" +#include "main/matrix.h" +#include "swrast/swrast.h" +#include "shader/arbprogram.h" +#include "shader/program.h" + +#include "intel_context.h" +#include "intel_pixel.h" +#include "intel_regions.h" + +#define FILE_DEBUG_FLAG DEBUG_PIXEL + +static GLenum +effective_func(GLenum func, GLboolean src_alpha_is_one) +{ + if (src_alpha_is_one) { + if (func == GL_SRC_ALPHA) + return GL_ONE; + if (func == GL_ONE_MINUS_SRC_ALPHA) + return GL_ZERO; + } + + return func; +} + +/** + * Check if any fragment operations are in effect which might effect + * glDraw/CopyPixels. + */ +GLboolean +intel_check_blit_fragment_ops(GLcontext * ctx, GLboolean src_alpha_is_one) +{ + if (ctx->NewState) + _mesa_update_state(ctx); + + if (ctx->FragmentProgram._Enabled) { + DBG("fallback due to fragment program\n"); + return GL_FALSE; + } + + if (ctx->Color.BlendEnabled && + (effective_func(ctx->Color.BlendSrcRGB, src_alpha_is_one) != GL_ONE || + effective_func(ctx->Color.BlendDstRGB, src_alpha_is_one) != GL_ZERO || + ctx->Color.BlendEquationRGB != GL_FUNC_ADD || + effective_func(ctx->Color.BlendSrcA, src_alpha_is_one) != GL_ONE || + effective_func(ctx->Color.BlendDstA, src_alpha_is_one) != GL_ZERO || + ctx->Color.BlendEquationA != GL_FUNC_ADD)) { + DBG("fallback due to blend\n"); + return GL_FALSE; + } + + if (ctx->Texture._EnabledUnits) { + DBG("fallback due to texturing\n"); + return GL_FALSE; + } + + if (!(ctx->Color.ColorMask[0] && + ctx->Color.ColorMask[1] && + ctx->Color.ColorMask[2] && + ctx->Color.ColorMask[3])) { + DBG("fallback due to color masking\n"); + return GL_FALSE; + } + + if (ctx->Color.AlphaEnabled) { + DBG("fallback due to alpha\n"); + return GL_FALSE; + } + + if (ctx->Depth.Test) { + DBG("fallback due to depth test\n"); + return GL_FALSE; + } + + if (ctx->Fog.Enabled) { + DBG("fallback due to fog\n"); + return GL_FALSE; + } + + if (ctx->_ImageTransferState) { + DBG("fallback due to image transfer\n"); + return GL_FALSE; + } + + if (ctx->Stencil.Enabled) { + DBG("fallback due to image stencil\n"); + return GL_FALSE; + } + + if (ctx->RenderMode != GL_RENDER) { + DBG("fallback due to render mode\n"); + return GL_FALSE; + } + + return GL_TRUE; +} + + +GLboolean +intel_check_meta_tex_fragment_ops(GLcontext * ctx) +{ + if (ctx->NewState) + _mesa_update_state(ctx); + + /* Some of _ImageTransferState (scale, bias) could be done with + * fragment programs on i915. + */ + return !(ctx->_ImageTransferState || ctx->Fog.Enabled || /* not done yet */ + ctx->Texture._EnabledUnits || ctx->FragmentProgram._Enabled); +} + +/* The intel_region struct doesn't really do enough to capture the + * format of the pixels in the region. For now this code assumes that + * the region is a display surface and hence is either ARGB8888 or + * RGB565. + * XXX FBO: If we'd pass in the intel_renderbuffer instead of region, we'd + * know the buffer's pixel format. + * + * \param format as given to glDraw/ReadPixels + * \param type as given to glDraw/ReadPixels + */ +GLboolean +intel_check_blit_format(struct intel_region * region, + GLenum format, GLenum type) +{ + if (region->cpp == 4 && + (type == GL_UNSIGNED_INT_8_8_8_8_REV || + type == GL_UNSIGNED_BYTE) && format == GL_BGRA) { + return GL_TRUE; + } + + if (region->cpp == 2 && + type == GL_UNSIGNED_SHORT_5_6_5_REV && format == GL_BGR) { + return GL_TRUE; + } + + if (INTEL_DEBUG & DEBUG_PIXEL) + fprintf(stderr, "%s: bad format for blit (cpp %d, type %s format %s)\n", + __FUNCTION__, region->cpp, + _mesa_lookup_enum_by_nr(type), _mesa_lookup_enum_by_nr(format)); + + return GL_FALSE; +} + +void +intel_meta_set_passthrough_transform(struct intel_context *intel) +{ + GLcontext *ctx = &intel->ctx; + + intel->meta.saved_vp_x = ctx->Viewport.X; + intel->meta.saved_vp_y = ctx->Viewport.Y; + intel->meta.saved_vp_width = ctx->Viewport.Width; + intel->meta.saved_vp_height = ctx->Viewport.Height; + intel->meta.saved_matrix_mode = ctx->Transform.MatrixMode; + + _mesa_Viewport(0, 0, ctx->DrawBuffer->Width, ctx->DrawBuffer->Height); + + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); + _mesa_Ortho(0, ctx->DrawBuffer->Width, 0, ctx->DrawBuffer->Height, 1, -1); + + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PushMatrix(); + _mesa_LoadIdentity(); +} + +void +intel_meta_restore_transform(struct intel_context *intel) +{ + _mesa_MatrixMode(GL_PROJECTION); + _mesa_PopMatrix(); + _mesa_MatrixMode(GL_MODELVIEW); + _mesa_PopMatrix(); + + _mesa_MatrixMode(intel->meta.saved_matrix_mode); + + _mesa_Viewport(intel->meta.saved_vp_x, intel->meta.saved_vp_y, + intel->meta.saved_vp_width, intel->meta.saved_vp_height); +} + +/** + * Set up a vertex program to pass through the position and first texcoord + * for pixel path. + */ +void +intel_meta_set_passthrough_vertex_program(struct intel_context *intel) +{ + GLcontext *ctx = &intel->ctx; + static const char *vp = + "!!ARBvp1.0\n" + "TEMP vertexClip;\n" + "DP4 vertexClip.x, state.matrix.mvp.row[0], vertex.position;\n" + "DP4 vertexClip.y, state.matrix.mvp.row[1], vertex.position;\n" + "DP4 vertexClip.z, state.matrix.mvp.row[2], vertex.position;\n" + "DP4 vertexClip.w, state.matrix.mvp.row[3], vertex.position;\n" + "MOV result.position, vertexClip;\n" + "MOV result.texcoord[0], vertex.texcoord[0];\n" + "MOV result.color, vertex.color;\n" + "END\n"; + + assert(intel->meta.saved_vp == NULL); + + _mesa_reference_vertprog(ctx, &intel->meta.saved_vp, + ctx->VertexProgram.Current); + if (intel->meta.passthrough_vp == NULL) { + GLuint prog_name; + _mesa_GenPrograms(1, &prog_name); + _mesa_BindProgram(GL_VERTEX_PROGRAM_ARB, prog_name); + _mesa_ProgramStringARB(GL_VERTEX_PROGRAM_ARB, + GL_PROGRAM_FORMAT_ASCII_ARB, + strlen(vp), (const GLubyte *)vp); + _mesa_reference_vertprog(ctx, &intel->meta.passthrough_vp, + ctx->VertexProgram.Current); + _mesa_DeletePrograms(1, &prog_name); + } + + FLUSH_VERTICES(ctx, _NEW_PROGRAM); + _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, + intel->meta.passthrough_vp); + ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB, + &intel->meta.passthrough_vp->Base); + + intel->meta.saved_vp_enable = ctx->VertexProgram.Enabled; + _mesa_Enable(GL_VERTEX_PROGRAM_ARB); +} + +/** + * Restores the previous vertex program after + * intel_meta_set_passthrough_vertex_program() + */ +void +intel_meta_restore_vertex_program(struct intel_context *intel) +{ + GLcontext *ctx = &intel->ctx; + + FLUSH_VERTICES(ctx, _NEW_PROGRAM); + _mesa_reference_vertprog(ctx, &ctx->VertexProgram.Current, + intel->meta.saved_vp); + _mesa_reference_vertprog(ctx, &intel->meta.saved_vp, NULL); + ctx->Driver.BindProgram(ctx, GL_VERTEX_PROGRAM_ARB, + &ctx->VertexProgram.Current->Base); + + if (!intel->meta.saved_vp_enable) + _mesa_Disable(GL_VERTEX_PROGRAM_ARB); +} + +/** + * Binds the given program string to GL_FRAGMENT_PROGRAM_ARB, caching the + * program object. + */ +void +intel_meta_set_fragment_program(struct intel_context *intel, + struct gl_fragment_program **prog, + const char *prog_string) +{ + GLcontext *ctx = &intel->ctx; + assert(intel->meta.saved_fp == NULL); + + _mesa_reference_fragprog(ctx, &intel->meta.saved_fp, + ctx->FragmentProgram.Current); + if (*prog == NULL) { + GLuint prog_name; + _mesa_GenPrograms(1, &prog_name); + _mesa_BindProgram(GL_FRAGMENT_PROGRAM_ARB, prog_name); + _mesa_ProgramStringARB(GL_FRAGMENT_PROGRAM_ARB, + GL_PROGRAM_FORMAT_ASCII_ARB, + strlen(prog_string), (const GLubyte *)prog_string); + _mesa_reference_fragprog(ctx, prog, ctx->FragmentProgram.Current); + /* Note that DeletePrograms unbinds the program on us */ + _mesa_DeletePrograms(1, &prog_name); + } + + FLUSH_VERTICES(ctx, _NEW_PROGRAM); + _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current, *prog); + ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, &((*prog)->Base)); + + intel->meta.saved_fp_enable = ctx->FragmentProgram.Enabled; + _mesa_Enable(GL_FRAGMENT_PROGRAM_ARB); +} + +/** + * Restores the previous fragment program after + * intel_meta_set_fragment_program() + */ +void +intel_meta_restore_fragment_program(struct intel_context *intel) +{ + GLcontext *ctx = &intel->ctx; + + FLUSH_VERTICES(ctx, _NEW_PROGRAM); + _mesa_reference_fragprog(ctx, &ctx->FragmentProgram.Current, + intel->meta.saved_fp); + _mesa_reference_fragprog(ctx, &intel->meta.saved_fp, NULL); + ctx->Driver.BindProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, + &ctx->FragmentProgram.Current->Base); + + if (!intel->meta.saved_fp_enable) + _mesa_Disable(GL_FRAGMENT_PROGRAM_ARB); +} + +void +intelInitPixelFuncs(struct dd_function_table *functions) +{ + functions->Accum = _swrast_Accum; + if (!getenv("INTEL_NO_BLIT")) { + functions->Bitmap = intelBitmap; + functions->CopyPixels = intelCopyPixels; + functions->DrawPixels = intelDrawPixels; +#ifdef I915 + functions->ReadPixels = intelReadPixels; +#endif + } +} + +void +intel_free_pixel_state(struct intel_context *intel) +{ + GLcontext *ctx = &intel->ctx; + + _mesa_reference_vertprog(ctx, &intel->meta.passthrough_vp, NULL); + _mesa_reference_fragprog(ctx, &intel->meta.bitmap_fp, NULL); +} + |