| /************************************************************************** |
| * |
| * Copyright 2007 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. |
| * |
| **************************************************************************/ |
| |
| /* |
| * Authors: |
| * Brian Paul |
| */ |
| |
| #include "main/imports.h" |
| #include "main/image.h" |
| #include "main/bufferobj.h" |
| #include "main/format_pack.h" |
| #include "main/macros.h" |
| #include "main/mfeatures.h" |
| #include "main/mtypes.h" |
| #include "main/pack.h" |
| #include "main/pbo.h" |
| #include "main/readpix.h" |
| #include "main/texformat.h" |
| #include "main/teximage.h" |
| #include "main/texstore.h" |
| #include "main/glformats.h" |
| #include "program/program.h" |
| #include "program/prog_print.h" |
| #include "program/prog_instruction.h" |
| |
| #include "st_atom.h" |
| #include "st_atom_constbuf.h" |
| #include "st_cb_drawpixels.h" |
| #include "st_cb_readpixels.h" |
| #include "st_cb_fbo.h" |
| #include "st_context.h" |
| #include "st_debug.h" |
| #include "st_format.h" |
| #include "st_program.h" |
| #include "st_texture.h" |
| |
| #include "pipe/p_context.h" |
| #include "pipe/p_defines.h" |
| #include "tgsi/tgsi_ureg.h" |
| #include "util/u_draw_quad.h" |
| #include "util/u_format.h" |
| #include "util/u_inlines.h" |
| #include "util/u_math.h" |
| #include "util/u_tile.h" |
| #include "util/u_upload_mgr.h" |
| #include "cso_cache/cso_context.h" |
| |
| |
| #if FEATURE_drawpix |
| |
| /** |
| * Check if the given program is: |
| * 0: MOVE result.color, fragment.color; |
| * 1: END; |
| */ |
| static GLboolean |
| is_passthrough_program(const struct gl_fragment_program *prog) |
| { |
| if (prog->Base.NumInstructions == 2) { |
| const struct prog_instruction *inst = prog->Base.Instructions; |
| if (inst[0].Opcode == OPCODE_MOV && |
| inst[1].Opcode == OPCODE_END && |
| inst[0].DstReg.File == PROGRAM_OUTPUT && |
| inst[0].DstReg.Index == FRAG_RESULT_COLOR && |
| inst[0].DstReg.WriteMask == WRITEMASK_XYZW && |
| inst[0].SrcReg[0].File == PROGRAM_INPUT && |
| inst[0].SrcReg[0].Index == FRAG_ATTRIB_COL0 && |
| inst[0].SrcReg[0].Swizzle == SWIZZLE_XYZW) { |
| return GL_TRUE; |
| } |
| } |
| return GL_FALSE; |
| } |
| |
| |
| /** |
| * Returns a fragment program which implements the current pixel transfer ops. |
| */ |
| static struct gl_fragment_program * |
| get_glsl_pixel_transfer_program(struct st_context *st, |
| struct st_fragment_program *orig) |
| { |
| int pixelMaps = 0, scaleAndBias = 0; |
| struct gl_context *ctx = st->ctx; |
| struct st_fragment_program *fp = (struct st_fragment_program *) |
| ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); |
| |
| if (!fp) |
| return NULL; |
| |
| if (ctx->Pixel.RedBias != 0.0 || ctx->Pixel.RedScale != 1.0 || |
| ctx->Pixel.GreenBias != 0.0 || ctx->Pixel.GreenScale != 1.0 || |
| ctx->Pixel.BlueBias != 0.0 || ctx->Pixel.BlueScale != 1.0 || |
| ctx->Pixel.AlphaBias != 0.0 || ctx->Pixel.AlphaScale != 1.0) { |
| scaleAndBias = 1; |
| } |
| |
| pixelMaps = ctx->Pixel.MapColorFlag; |
| |
| if (pixelMaps) { |
| /* create the colormap/texture now if not already done */ |
| if (!st->pixel_xfer.pixelmap_texture) { |
| st->pixel_xfer.pixelmap_texture = st_create_color_map_texture(ctx); |
| st->pixel_xfer.pixelmap_sampler_view = |
| st_create_texture_sampler_view(st->pipe, |
| st->pixel_xfer.pixelmap_texture); |
| } |
| } |
| |
| get_pixel_transfer_visitor(fp, orig->glsl_to_tgsi, |
| scaleAndBias, pixelMaps); |
| |
| return &fp->Base; |
| } |
| |
| |
| /** |
| * Make fragment shader for glDraw/CopyPixels. This shader is made |
| * by combining the pixel transfer shader with the user-defined shader. |
| * \param fpIn the current/incoming fragment program |
| * \param fpOut returns the combined fragment program |
| */ |
| void |
| st_make_drawpix_fragment_program(struct st_context *st, |
| struct gl_fragment_program *fpIn, |
| struct gl_fragment_program **fpOut) |
| { |
| struct gl_program *newProg; |
| struct st_fragment_program *stfp = (struct st_fragment_program *) fpIn; |
| |
| if (is_passthrough_program(fpIn)) { |
| newProg = (struct gl_program *) _mesa_clone_fragment_program(st->ctx, |
| &st->pixel_xfer.program->Base); |
| } |
| else if (stfp->glsl_to_tgsi != NULL) { |
| newProg = (struct gl_program *) get_glsl_pixel_transfer_program(st, stfp); |
| } |
| else { |
| #if 0 |
| /* debug */ |
| printf("Base program:\n"); |
| _mesa_print_program(&fpIn->Base); |
| printf("DrawPix program:\n"); |
| _mesa_print_program(&st->pixel_xfer.program->Base.Base); |
| #endif |
| newProg = _mesa_combine_programs(st->ctx, |
| &st->pixel_xfer.program->Base.Base, |
| &fpIn->Base); |
| } |
| |
| #if 0 |
| /* debug */ |
| printf("Combined DrawPixels program:\n"); |
| _mesa_print_program(newProg); |
| printf("InputsRead: 0x%x\n", newProg->InputsRead); |
| printf("OutputsWritten: 0x%x\n", newProg->OutputsWritten); |
| _mesa_print_parameter_list(newProg->Parameters); |
| #endif |
| |
| *fpOut = (struct gl_fragment_program *) newProg; |
| } |
| |
| |
| /** |
| * Create fragment program that does a TEX() instruction to get a Z and/or |
| * stencil value value, then writes to FRAG_RESULT_DEPTH/FRAG_RESULT_STENCIL. |
| * Used for glDrawPixels(GL_DEPTH_COMPONENT / GL_STENCIL_INDEX). |
| * Pass fragment color through as-is. |
| * \return pointer to the gl_fragment program |
| */ |
| struct gl_fragment_program * |
| st_make_drawpix_z_stencil_program(struct st_context *st, |
| GLboolean write_depth, |
| GLboolean write_stencil) |
| { |
| struct gl_context *ctx = st->ctx; |
| struct gl_program *p; |
| struct gl_fragment_program *fp; |
| GLuint ic = 0; |
| const GLuint shaderIndex = write_depth * 2 + write_stencil; |
| |
| assert(shaderIndex < Elements(st->drawpix.shaders)); |
| |
| if (st->drawpix.shaders[shaderIndex]) { |
| /* already have the proper shader */ |
| return st->drawpix.shaders[shaderIndex]; |
| } |
| |
| /* |
| * Create shader now |
| */ |
| p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); |
| if (!p) |
| return NULL; |
| |
| p->NumInstructions = write_depth ? 3 : 1; |
| p->NumInstructions += write_stencil ? 1 : 0; |
| |
| p->Instructions = _mesa_alloc_instructions(p->NumInstructions); |
| if (!p->Instructions) { |
| ctx->Driver.DeleteProgram(ctx, p); |
| return NULL; |
| } |
| _mesa_init_instructions(p->Instructions, p->NumInstructions); |
| |
| if (write_depth) { |
| /* TEX result.depth, fragment.texcoord[0], texture[0], 2D; */ |
| p->Instructions[ic].Opcode = OPCODE_TEX; |
| p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT; |
| p->Instructions[ic].DstReg.Index = FRAG_RESULT_DEPTH; |
| p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Z; |
| p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT; |
| p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0; |
| p->Instructions[ic].TexSrcUnit = 0; |
| p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX; |
| ic++; |
| /* MOV result.color, fragment.color; */ |
| p->Instructions[ic].Opcode = OPCODE_MOV; |
| p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT; |
| p->Instructions[ic].DstReg.Index = FRAG_RESULT_COLOR; |
| p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT; |
| p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_COL0; |
| ic++; |
| } |
| |
| if (write_stencil) { |
| /* TEX result.stencil, fragment.texcoord[0], texture[0], 2D; */ |
| p->Instructions[ic].Opcode = OPCODE_TEX; |
| p->Instructions[ic].DstReg.File = PROGRAM_OUTPUT; |
| p->Instructions[ic].DstReg.Index = FRAG_RESULT_STENCIL; |
| p->Instructions[ic].DstReg.WriteMask = WRITEMASK_Y; |
| p->Instructions[ic].SrcReg[0].File = PROGRAM_INPUT; |
| p->Instructions[ic].SrcReg[0].Index = FRAG_ATTRIB_TEX0; |
| p->Instructions[ic].TexSrcUnit = 1; |
| p->Instructions[ic].TexSrcTarget = TEXTURE_2D_INDEX; |
| ic++; |
| } |
| |
| /* END; */ |
| p->Instructions[ic++].Opcode = OPCODE_END; |
| |
| assert(ic == p->NumInstructions); |
| |
| p->InputsRead = FRAG_BIT_TEX0 | FRAG_BIT_COL0; |
| p->OutputsWritten = 0; |
| if (write_depth) { |
| p->OutputsWritten |= BITFIELD64_BIT(FRAG_RESULT_DEPTH); |
| p->OutputsWritten |= BITFIELD64_BIT(FRAG_RESULT_COLOR); |
| } |
| if (write_stencil) |
| p->OutputsWritten |= BITFIELD64_BIT(FRAG_RESULT_STENCIL); |
| |
| p->SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */ |
| if (write_stencil) |
| p->SamplersUsed |= 1 << 1; |
| |
| fp = (struct gl_fragment_program *) p; |
| |
| /* save the new shader */ |
| st->drawpix.shaders[shaderIndex] = fp; |
| |
| return fp; |
| } |
| |
| |
| /** |
| * Create a simple vertex shader that just passes through the |
| * vertex position and texcoord (and optionally, color). |
| */ |
| static void * |
| make_passthrough_vertex_shader(struct st_context *st, |
| GLboolean passColor) |
| { |
| if (!st->drawpix.vert_shaders[passColor]) { |
| struct ureg_program *ureg = ureg_create( TGSI_PROCESSOR_VERTEX ); |
| |
| if (ureg == NULL) |
| return NULL; |
| |
| /* MOV result.pos, vertex.pos; */ |
| ureg_MOV(ureg, |
| ureg_DECL_output( ureg, TGSI_SEMANTIC_POSITION, 0 ), |
| ureg_DECL_vs_input( ureg, 0 )); |
| |
| /* MOV result.texcoord0, vertex.attr[1]; */ |
| ureg_MOV(ureg, |
| ureg_DECL_output( ureg, TGSI_SEMANTIC_GENERIC, 0 ), |
| ureg_DECL_vs_input( ureg, 1 )); |
| |
| if (passColor) { |
| /* MOV result.color0, vertex.attr[2]; */ |
| ureg_MOV(ureg, |
| ureg_DECL_output( ureg, TGSI_SEMANTIC_COLOR, 0 ), |
| ureg_DECL_vs_input( ureg, 2 )); |
| } |
| |
| ureg_END( ureg ); |
| |
| st->drawpix.vert_shaders[passColor] = |
| ureg_create_shader_and_destroy( ureg, st->pipe ); |
| } |
| |
| return st->drawpix.vert_shaders[passColor]; |
| } |
| |
| |
| /** |
| * Return a texture internalFormat for drawing/copying an image |
| * of the given format and type. |
| */ |
| static GLenum |
| internal_format(struct gl_context *ctx, GLenum format, GLenum type) |
| { |
| switch (format) { |
| case GL_DEPTH_COMPONENT: |
| switch (type) { |
| case GL_UNSIGNED_SHORT: |
| return GL_DEPTH_COMPONENT16; |
| |
| case GL_UNSIGNED_INT: |
| return GL_DEPTH_COMPONENT32; |
| |
| case GL_FLOAT: |
| if (ctx->Extensions.ARB_depth_buffer_float) |
| return GL_DEPTH_COMPONENT32F; |
| else |
| return GL_DEPTH_COMPONENT; |
| |
| default: |
| return GL_DEPTH_COMPONENT; |
| } |
| |
| case GL_DEPTH_STENCIL: |
| switch (type) { |
| case GL_FLOAT_32_UNSIGNED_INT_24_8_REV: |
| return GL_DEPTH32F_STENCIL8; |
| |
| case GL_UNSIGNED_INT_24_8: |
| default: |
| return GL_DEPTH24_STENCIL8; |
| } |
| |
| case GL_STENCIL_INDEX: |
| return GL_STENCIL_INDEX; |
| |
| default: |
| if (_mesa_is_enum_format_integer(format)) { |
| switch (type) { |
| case GL_BYTE: |
| return GL_RGBA8I; |
| case GL_UNSIGNED_BYTE: |
| return GL_RGBA8UI; |
| case GL_SHORT: |
| return GL_RGBA16I; |
| case GL_UNSIGNED_SHORT: |
| return GL_RGBA16UI; |
| case GL_INT: |
| return GL_RGBA32I; |
| case GL_UNSIGNED_INT: |
| return GL_RGBA32UI; |
| default: |
| assert(0 && "Unexpected type in internal_format()"); |
| return GL_RGBA_INTEGER; |
| } |
| } |
| else { |
| switch (type) { |
| case GL_UNSIGNED_BYTE: |
| case GL_UNSIGNED_INT_8_8_8_8: |
| case GL_UNSIGNED_INT_8_8_8_8_REV: |
| default: |
| return GL_RGBA8; |
| |
| case GL_UNSIGNED_BYTE_3_3_2: |
| case GL_UNSIGNED_BYTE_2_3_3_REV: |
| return GL_R3_G3_B2; |
| |
| case GL_UNSIGNED_SHORT_4_4_4_4: |
| case GL_UNSIGNED_SHORT_4_4_4_4_REV: |
| return GL_RGBA4; |
| |
| case GL_UNSIGNED_SHORT_5_6_5: |
| case GL_UNSIGNED_SHORT_5_6_5_REV: |
| return GL_RGB565; |
| |
| case GL_UNSIGNED_SHORT_5_5_5_1: |
| case GL_UNSIGNED_SHORT_1_5_5_5_REV: |
| return GL_RGB5_A1; |
| |
| case GL_UNSIGNED_INT_10_10_10_2: |
| case GL_UNSIGNED_INT_2_10_10_10_REV: |
| return GL_RGB10_A2; |
| |
| case GL_UNSIGNED_SHORT: |
| case GL_UNSIGNED_INT: |
| return GL_RGBA16; |
| |
| case GL_BYTE: |
| return |
| ctx->Extensions.EXT_texture_snorm ? GL_RGBA8_SNORM : GL_RGBA8; |
| |
| case GL_SHORT: |
| case GL_INT: |
| return |
| ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16; |
| |
| case GL_HALF_FLOAT_ARB: |
| return |
| ctx->Extensions.ARB_texture_float ? GL_RGBA16F : |
| ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16; |
| |
| case GL_FLOAT: |
| case GL_DOUBLE: |
| return |
| ctx->Extensions.ARB_texture_float ? GL_RGBA32F : |
| ctx->Extensions.EXT_texture_snorm ? GL_RGBA16_SNORM : GL_RGBA16; |
| |
| case GL_UNSIGNED_INT_5_9_9_9_REV: |
| assert(ctx->Extensions.EXT_texture_shared_exponent); |
| return GL_RGB9_E5; |
| |
| case GL_UNSIGNED_INT_10F_11F_11F_REV: |
| assert(ctx->Extensions.EXT_packed_float); |
| return GL_R11F_G11F_B10F; |
| } |
| } |
| } |
| } |
| |
| |
| /** |
| * Create a temporary texture to hold an image of the given size. |
| * If width, height are not POT and the driver only handles POT textures, |
| * allocate the next larger size of texture that is POT. |
| */ |
| static struct pipe_resource * |
| alloc_texture(struct st_context *st, GLsizei width, GLsizei height, |
| enum pipe_format texFormat) |
| { |
| struct pipe_resource *pt; |
| |
| pt = st_texture_create(st, st->internal_target, texFormat, 0, |
| width, height, 1, 1, PIPE_BIND_SAMPLER_VIEW); |
| |
| return pt; |
| } |
| |
| |
| /** |
| * Make texture containing an image for glDrawPixels image. |
| * If 'pixels' is NULL, leave the texture image data undefined. |
| */ |
| static struct pipe_resource * |
| make_texture(struct st_context *st, |
| GLsizei width, GLsizei height, GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLvoid *pixels) |
| { |
| struct gl_context *ctx = st->ctx; |
| struct pipe_context *pipe = st->pipe; |
| gl_format mformat; |
| struct pipe_resource *pt; |
| enum pipe_format pipeFormat; |
| GLenum baseInternalFormat, intFormat; |
| |
| intFormat = internal_format(ctx, format, type); |
| baseInternalFormat = _mesa_base_tex_format(ctx, intFormat); |
| |
| mformat = st_ChooseTextureFormat_renderable(ctx, intFormat, |
| format, type, GL_FALSE); |
| assert(mformat); |
| |
| pipeFormat = st_mesa_format_to_pipe_format(mformat); |
| assert(pipeFormat); |
| |
| pixels = _mesa_map_pbo_source(ctx, unpack, pixels); |
| if (!pixels) |
| return NULL; |
| |
| /* alloc temporary texture */ |
| pt = alloc_texture(st, width, height, pipeFormat); |
| if (!pt) { |
| _mesa_unmap_pbo_source(ctx, unpack); |
| return NULL; |
| } |
| |
| { |
| struct pipe_transfer *transfer; |
| GLboolean success; |
| GLubyte *dest; |
| const GLbitfield imageTransferStateSave = ctx->_ImageTransferState; |
| |
| /* we'll do pixel transfer in a fragment shader */ |
| ctx->_ImageTransferState = 0x0; |
| |
| transfer = pipe_get_transfer(st->pipe, pt, 0, 0, |
| PIPE_TRANSFER_WRITE, 0, 0, |
| width, height); |
| |
| /* map texture transfer */ |
| dest = pipe_transfer_map(pipe, transfer); |
| |
| |
| /* Put image into texture transfer. |
| * Note that the image is actually going to be upside down in |
| * the texture. We deal with that with texcoords. |
| */ |
| success = _mesa_texstore(ctx, 2, /* dims */ |
| baseInternalFormat, /* baseInternalFormat */ |
| mformat, /* gl_format */ |
| transfer->stride, /* dstRowStride, bytes */ |
| &dest, /* destSlices */ |
| width, height, 1, /* size */ |
| format, type, /* src format/type */ |
| pixels, /* data source */ |
| unpack); |
| |
| /* unmap */ |
| pipe_transfer_unmap(pipe, transfer); |
| pipe->transfer_destroy(pipe, transfer); |
| |
| assert(success); |
| |
| /* restore */ |
| ctx->_ImageTransferState = imageTransferStateSave; |
| } |
| |
| _mesa_unmap_pbo_source(ctx, unpack); |
| |
| return pt; |
| } |
| |
| |
| /** |
| * Draw quad with texcoords and optional color. |
| * Coords are gallium window coords with y=0=top. |
| * \param color may be null |
| * \param invertTex if true, flip texcoords vertically |
| */ |
| static void |
| draw_quad(struct gl_context *ctx, GLfloat x0, GLfloat y0, GLfloat z, |
| GLfloat x1, GLfloat y1, const GLfloat *color, |
| GLboolean invertTex, GLfloat maxXcoord, GLfloat maxYcoord) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| GLfloat (*verts)[3][4]; /* four verts, three attribs, XYZW */ |
| struct pipe_resource *buf = NULL; |
| unsigned offset; |
| |
| if (u_upload_alloc(st->uploader, 0, 4 * sizeof(verts[0]), &offset, |
| &buf, (void **) &verts) != PIPE_OK) { |
| return; |
| } |
| |
| /* setup vertex data */ |
| { |
| const struct gl_framebuffer *fb = st->ctx->DrawBuffer; |
| const GLfloat fb_width = (GLfloat) fb->Width; |
| const GLfloat fb_height = (GLfloat) fb->Height; |
| const GLfloat clip_x0 = x0 / fb_width * 2.0f - 1.0f; |
| const GLfloat clip_y0 = y0 / fb_height * 2.0f - 1.0f; |
| const GLfloat clip_x1 = x1 / fb_width * 2.0f - 1.0f; |
| const GLfloat clip_y1 = y1 / fb_height * 2.0f - 1.0f; |
| const GLfloat sLeft = 0.0f, sRight = maxXcoord; |
| const GLfloat tTop = invertTex ? maxYcoord : 0.0f; |
| const GLfloat tBot = invertTex ? 0.0f : maxYcoord; |
| GLuint i; |
| |
| /* upper-left */ |
| verts[0][0][0] = clip_x0; /* v[0].attr[0].x */ |
| verts[0][0][1] = clip_y0; /* v[0].attr[0].y */ |
| |
| /* upper-right */ |
| verts[1][0][0] = clip_x1; |
| verts[1][0][1] = clip_y0; |
| |
| /* lower-right */ |
| verts[2][0][0] = clip_x1; |
| verts[2][0][1] = clip_y1; |
| |
| /* lower-left */ |
| verts[3][0][0] = clip_x0; |
| verts[3][0][1] = clip_y1; |
| |
| verts[0][1][0] = sLeft; /* v[0].attr[1].S */ |
| verts[0][1][1] = tTop; /* v[0].attr[1].T */ |
| verts[1][1][0] = sRight; |
| verts[1][1][1] = tTop; |
| verts[2][1][0] = sRight; |
| verts[2][1][1] = tBot; |
| verts[3][1][0] = sLeft; |
| verts[3][1][1] = tBot; |
| |
| /* same for all verts: */ |
| if (color) { |
| for (i = 0; i < 4; i++) { |
| verts[i][0][2] = z; /* v[i].attr[0].z */ |
| verts[i][0][3] = 1.0f; /* v[i].attr[0].w */ |
| verts[i][2][0] = color[0]; /* v[i].attr[2].r */ |
| verts[i][2][1] = color[1]; /* v[i].attr[2].g */ |
| verts[i][2][2] = color[2]; /* v[i].attr[2].b */ |
| verts[i][2][3] = color[3]; /* v[i].attr[2].a */ |
| verts[i][1][2] = 0.0f; /* v[i].attr[1].R */ |
| verts[i][1][3] = 1.0f; /* v[i].attr[1].Q */ |
| } |
| } |
| else { |
| for (i = 0; i < 4; i++) { |
| verts[i][0][2] = z; /*Z*/ |
| verts[i][0][3] = 1.0f; /*W*/ |
| verts[i][1][2] = 0.0f; /*R*/ |
| verts[i][1][3] = 1.0f; /*Q*/ |
| } |
| } |
| } |
| |
| u_upload_unmap(st->uploader); |
| util_draw_vertex_buffer(pipe, st->cso_context, buf, offset, |
| PIPE_PRIM_QUADS, |
| 4, /* verts */ |
| 3); /* attribs/vert */ |
| pipe_resource_reference(&buf, NULL); |
| } |
| |
| |
| |
| static void |
| draw_textured_quad(struct gl_context *ctx, GLint x, GLint y, GLfloat z, |
| GLsizei width, GLsizei height, |
| GLfloat zoomX, GLfloat zoomY, |
| struct pipe_sampler_view **sv, |
| int num_sampler_view, |
| void *driver_vp, |
| void *driver_fp, |
| const GLfloat *color, |
| GLboolean invertTex, |
| GLboolean write_depth, GLboolean write_stencil) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct cso_context *cso = st->cso_context; |
| GLfloat x0, y0, x1, y1; |
| GLsizei maxSize; |
| boolean normalized = sv[0]->texture->target != PIPE_TEXTURE_RECT; |
| |
| /* limit checks */ |
| /* XXX if DrawPixels image is larger than max texture size, break |
| * it up into chunks. |
| */ |
| maxSize = 1 << (pipe->screen->get_param(pipe->screen, |
| PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1); |
| assert(width <= maxSize); |
| assert(height <= maxSize); |
| |
| cso_save_rasterizer(cso); |
| cso_save_viewport(cso); |
| cso_save_samplers(cso, PIPE_SHADER_FRAGMENT); |
| cso_save_sampler_views(cso, PIPE_SHADER_FRAGMENT); |
| cso_save_fragment_shader(cso); |
| cso_save_stream_outputs(cso); |
| cso_save_vertex_shader(cso); |
| cso_save_geometry_shader(cso); |
| cso_save_vertex_elements(cso); |
| cso_save_vertex_buffers(cso); |
| if (write_stencil) { |
| cso_save_depth_stencil_alpha(cso); |
| cso_save_blend(cso); |
| } |
| |
| /* rasterizer state: just scissor */ |
| { |
| struct pipe_rasterizer_state rasterizer; |
| memset(&rasterizer, 0, sizeof(rasterizer)); |
| rasterizer.clamp_fragment_color = !st->clamp_frag_color_in_shader && |
| ctx->Color._ClampFragmentColor && |
| !ctx->DrawBuffer->_IntegerColor; |
| rasterizer.gl_rasterization_rules = 1; |
| rasterizer.depth_clip = !ctx->Transform.DepthClamp; |
| rasterizer.scissor = ctx->Scissor.Enabled; |
| cso_set_rasterizer(cso, &rasterizer); |
| } |
| |
| if (write_stencil) { |
| /* Stencil writing bypasses the normal fragment pipeline to |
| * disable color writing and set stencil test to always pass. |
| */ |
| struct pipe_depth_stencil_alpha_state dsa; |
| struct pipe_blend_state blend; |
| |
| /* depth/stencil */ |
| memset(&dsa, 0, sizeof(dsa)); |
| dsa.stencil[0].enabled = 1; |
| dsa.stencil[0].func = PIPE_FUNC_ALWAYS; |
| dsa.stencil[0].writemask = ctx->Stencil.WriteMask[0] & 0xff; |
| dsa.stencil[0].zpass_op = PIPE_STENCIL_OP_REPLACE; |
| if (write_depth) { |
| /* writing depth+stencil: depth test always passes */ |
| dsa.depth.enabled = 1; |
| dsa.depth.writemask = ctx->Depth.Mask; |
| dsa.depth.func = PIPE_FUNC_ALWAYS; |
| } |
| cso_set_depth_stencil_alpha(cso, &dsa); |
| |
| /* blend (colormask) */ |
| memset(&blend, 0, sizeof(blend)); |
| cso_set_blend(cso, &blend); |
| } |
| |
| /* fragment shader state: TEX lookup program */ |
| cso_set_fragment_shader_handle(cso, driver_fp); |
| |
| /* vertex shader state: position + texcoord pass-through */ |
| cso_set_vertex_shader_handle(cso, driver_vp); |
| |
| /* geometry shader state: disabled */ |
| cso_set_geometry_shader_handle(cso, NULL); |
| |
| /* texture sampling state: */ |
| { |
| struct pipe_sampler_state sampler; |
| memset(&sampler, 0, sizeof(sampler)); |
| sampler.wrap_s = PIPE_TEX_WRAP_CLAMP; |
| sampler.wrap_t = PIPE_TEX_WRAP_CLAMP; |
| sampler.wrap_r = PIPE_TEX_WRAP_CLAMP; |
| sampler.min_img_filter = PIPE_TEX_FILTER_NEAREST; |
| sampler.min_mip_filter = PIPE_TEX_MIPFILTER_NONE; |
| sampler.mag_img_filter = PIPE_TEX_FILTER_NEAREST; |
| sampler.normalized_coords = normalized; |
| |
| cso_single_sampler(cso, PIPE_SHADER_FRAGMENT, 0, &sampler); |
| if (num_sampler_view > 1) { |
| cso_single_sampler(cso, PIPE_SHADER_FRAGMENT, 1, &sampler); |
| } |
| cso_single_sampler_done(cso, PIPE_SHADER_FRAGMENT); |
| } |
| |
| /* viewport state: viewport matching window dims */ |
| { |
| const float w = (float) ctx->DrawBuffer->Width; |
| const float h = (float) ctx->DrawBuffer->Height; |
| struct pipe_viewport_state vp; |
| vp.scale[0] = 0.5f * w; |
| vp.scale[1] = -0.5f * h; |
| vp.scale[2] = 0.5f; |
| vp.scale[3] = 1.0f; |
| vp.translate[0] = 0.5f * w; |
| vp.translate[1] = 0.5f * h; |
| vp.translate[2] = 0.5f; |
| vp.translate[3] = 0.0f; |
| cso_set_viewport(cso, &vp); |
| } |
| |
| cso_set_vertex_elements(cso, 3, st->velems_util_draw); |
| cso_set_stream_outputs(st->cso_context, 0, NULL, 0); |
| |
| /* texture state: */ |
| cso_set_sampler_views(cso, PIPE_SHADER_FRAGMENT, num_sampler_view, sv); |
| |
| /* Compute Gallium window coords (y=0=top) with pixel zoom. |
| * Recall that these coords are transformed by the current |
| * vertex shader and viewport transformation. |
| */ |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_BOTTOM) { |
| y = ctx->DrawBuffer->Height - (int) (y + height * ctx->Pixel.ZoomY); |
| invertTex = !invertTex; |
| } |
| |
| x0 = (GLfloat) x; |
| x1 = x + width * ctx->Pixel.ZoomX; |
| y0 = (GLfloat) y; |
| y1 = y + height * ctx->Pixel.ZoomY; |
| |
| /* convert Z from [0,1] to [-1,-1] to match viewport Z scale/bias */ |
| z = z * 2.0 - 1.0; |
| |
| draw_quad(ctx, x0, y0, z, x1, y1, color, invertTex, |
| normalized ? ((GLfloat) width / sv[0]->texture->width0) : (GLfloat)width, |
| normalized ? ((GLfloat) height / sv[0]->texture->height0) : (GLfloat)height); |
| |
| /* restore state */ |
| cso_restore_rasterizer(cso); |
| cso_restore_viewport(cso); |
| cso_restore_samplers(cso, PIPE_SHADER_FRAGMENT); |
| cso_restore_sampler_views(cso, PIPE_SHADER_FRAGMENT); |
| cso_restore_fragment_shader(cso); |
| cso_restore_vertex_shader(cso); |
| cso_restore_geometry_shader(cso); |
| cso_restore_vertex_elements(cso); |
| cso_restore_vertex_buffers(cso); |
| cso_restore_stream_outputs(cso); |
| if (write_stencil) { |
| cso_restore_depth_stencil_alpha(cso); |
| cso_restore_blend(cso); |
| } |
| } |
| |
| |
| /** |
| * Software fallback to do glDrawPixels(GL_STENCIL_INDEX) when we |
| * can't use a fragment shader to write stencil values. |
| */ |
| static void |
| draw_stencil_pixels(struct gl_context *ctx, GLint x, GLint y, |
| GLsizei width, GLsizei height, GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *unpack, |
| const GLvoid *pixels) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct st_renderbuffer *strb; |
| enum pipe_transfer_usage usage; |
| struct pipe_transfer *pt; |
| const GLboolean zoom = ctx->Pixel.ZoomX != 1.0 || ctx->Pixel.ZoomY != 1.0; |
| ubyte *stmap; |
| struct gl_pixelstore_attrib clippedUnpack = *unpack; |
| GLubyte *sValues; |
| GLuint *zValues; |
| |
| if (!zoom) { |
| if (!_mesa_clip_drawpixels(ctx, &x, &y, &width, &height, |
| &clippedUnpack)) { |
| /* totally clipped */ |
| return; |
| } |
| } |
| |
| strb = st_renderbuffer(ctx->DrawBuffer-> |
| Attachment[BUFFER_STENCIL].Renderbuffer); |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| y = ctx->DrawBuffer->Height - y - height; |
| } |
| |
| if (format == GL_STENCIL_INDEX && |
| _mesa_is_format_packed_depth_stencil(strb->Base.Format)) { |
| /* writing stencil to a combined depth+stencil buffer */ |
| usage = PIPE_TRANSFER_READ_WRITE; |
| } |
| else { |
| usage = PIPE_TRANSFER_WRITE; |
| } |
| |
| pt = pipe_get_transfer(pipe, strb->texture, |
| strb->rtt_level, strb->rtt_face + strb->rtt_slice, |
| usage, x, y, |
| width, height); |
| |
| stmap = pipe_transfer_map(pipe, pt); |
| |
| pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels); |
| assert(pixels); |
| |
| sValues = (GLubyte *) malloc(width * sizeof(GLubyte)); |
| zValues = (GLuint *) malloc(width * sizeof(GLuint)); |
| |
| if (sValues && zValues) { |
| GLint row; |
| for (row = 0; row < height; row++) { |
| GLfloat *zValuesFloat = (GLfloat*)zValues; |
| GLenum destType = GL_UNSIGNED_BYTE; |
| const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels, |
| width, height, |
| format, type, |
| row, 0); |
| _mesa_unpack_stencil_span(ctx, width, destType, sValues, |
| type, source, &clippedUnpack, |
| ctx->_ImageTransferState); |
| |
| if (format == GL_DEPTH_STENCIL) { |
| GLenum ztype = |
| pt->resource->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT ? |
| GL_FLOAT : GL_UNSIGNED_INT; |
| |
| _mesa_unpack_depth_span(ctx, width, ztype, zValues, |
| (1 << 24) - 1, type, source, |
| &clippedUnpack); |
| } |
| |
| if (zoom) { |
| _mesa_problem(ctx, "Gallium glDrawPixels(GL_STENCIL) with " |
| "zoom not complete"); |
| } |
| |
| { |
| GLint spanY; |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| spanY = height - row - 1; |
| } |
| else { |
| spanY = row; |
| } |
| |
| /* now pack the stencil (and Z) values in the dest format */ |
| switch (pt->resource->format) { |
| case PIPE_FORMAT_S8_UINT: |
| { |
| ubyte *dest = stmap + spanY * pt->stride; |
| assert(usage == PIPE_TRANSFER_WRITE); |
| memcpy(dest, sValues, width); |
| } |
| break; |
| case PIPE_FORMAT_Z24_UNORM_S8_UINT: |
| if (format == GL_DEPTH_STENCIL) { |
| uint *dest = (uint *) (stmap + spanY * pt->stride); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_WRITE); |
| for (k = 0; k < width; k++) { |
| dest[k] = zValues[k] | (sValues[k] << 24); |
| } |
| } |
| else { |
| uint *dest = (uint *) (stmap + spanY * pt->stride); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_READ_WRITE); |
| for (k = 0; k < width; k++) { |
| dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24); |
| } |
| } |
| break; |
| case PIPE_FORMAT_S8_UINT_Z24_UNORM: |
| if (format == GL_DEPTH_STENCIL) { |
| uint *dest = (uint *) (stmap + spanY * pt->stride); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_WRITE); |
| for (k = 0; k < width; k++) { |
| dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff); |
| } |
| } |
| else { |
| uint *dest = (uint *) (stmap + spanY * pt->stride); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_READ_WRITE); |
| for (k = 0; k < width; k++) { |
| dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff); |
| } |
| } |
| break; |
| case PIPE_FORMAT_Z32_FLOAT_S8X24_UINT: |
| if (format == GL_DEPTH_STENCIL) { |
| uint *dest = (uint *) (stmap + spanY * pt->stride); |
| GLfloat *destf = (GLfloat*)dest; |
| GLint k; |
| assert(usage == PIPE_TRANSFER_WRITE); |
| for (k = 0; k < width; k++) { |
| destf[k*2] = zValuesFloat[k]; |
| dest[k*2+1] = sValues[k] & 0xff; |
| } |
| } |
| else { |
| uint *dest = (uint *) (stmap + spanY * pt->stride); |
| GLint k; |
| assert(usage == PIPE_TRANSFER_READ_WRITE); |
| for (k = 0; k < width; k++) { |
| dest[k*2+1] = sValues[k] & 0xff; |
| } |
| } |
| break; |
| default: |
| assert(0); |
| } |
| } |
| } |
| } |
| else { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glDrawPixels()"); |
| } |
| |
| free(sValues); |
| free(zValues); |
| |
| _mesa_unmap_pbo_source(ctx, &clippedUnpack); |
| |
| /* unmap the stencil buffer */ |
| pipe_transfer_unmap(pipe, pt); |
| pipe->transfer_destroy(pipe, pt); |
| } |
| |
| |
| /** |
| * Get fragment program variant for a glDrawPixels or glCopyPixels |
| * command for RGBA data. |
| */ |
| static struct st_fp_variant * |
| get_color_fp_variant(struct st_context *st) |
| { |
| struct gl_context *ctx = st->ctx; |
| struct st_fp_variant_key key; |
| struct st_fp_variant *fpv; |
| |
| memset(&key, 0, sizeof(key)); |
| |
| key.st = st; |
| key.drawpixels = 1; |
| key.scaleAndBias = (ctx->Pixel.RedBias != 0.0 || |
| ctx->Pixel.RedScale != 1.0 || |
| ctx->Pixel.GreenBias != 0.0 || |
| ctx->Pixel.GreenScale != 1.0 || |
| ctx->Pixel.BlueBias != 0.0 || |
| ctx->Pixel.BlueScale != 1.0 || |
| ctx->Pixel.AlphaBias != 0.0 || |
| ctx->Pixel.AlphaScale != 1.0); |
| key.pixelMaps = ctx->Pixel.MapColorFlag; |
| key.clamp_color = st->clamp_frag_color_in_shader && |
| st->ctx->Color._ClampFragmentColor && |
| !st->ctx->DrawBuffer->_IntegerColor; |
| |
| fpv = st_get_fp_variant(st, st->fp, &key); |
| |
| return fpv; |
| } |
| |
| |
| /** |
| * Get fragment program variant for a glDrawPixels or glCopyPixels |
| * command for depth/stencil data. |
| */ |
| static struct st_fp_variant * |
| get_depth_stencil_fp_variant(struct st_context *st, GLboolean write_depth, |
| GLboolean write_stencil) |
| { |
| struct st_fp_variant_key key; |
| struct st_fp_variant *fpv; |
| |
| memset(&key, 0, sizeof(key)); |
| |
| key.st = st; |
| key.drawpixels = 1; |
| key.drawpixels_z = write_depth; |
| key.drawpixels_stencil = write_stencil; |
| |
| fpv = st_get_fp_variant(st, st->fp, &key); |
| |
| return fpv; |
| } |
| |
| |
| /** |
| * Clamp glDrawPixels width and height to the maximum texture size. |
| */ |
| static void |
| clamp_size(struct pipe_context *pipe, GLsizei *width, GLsizei *height, |
| struct gl_pixelstore_attrib *unpack) |
| { |
| const unsigned maxSize = |
| 1 << (pipe->screen->get_param(pipe->screen, |
| PIPE_CAP_MAX_TEXTURE_2D_LEVELS) - 1); |
| |
| if (*width > maxSize) { |
| if (unpack->RowLength == 0) |
| unpack->RowLength = *width; |
| *width = maxSize; |
| } |
| if (*height > maxSize) { |
| *height = maxSize; |
| } |
| } |
| |
| |
| /** |
| * Called via ctx->Driver.DrawPixels() |
| */ |
| static void |
| st_DrawPixels(struct gl_context *ctx, GLint x, GLint y, |
| GLsizei width, GLsizei height, |
| GLenum format, GLenum type, |
| const struct gl_pixelstore_attrib *unpack, const GLvoid *pixels) |
| { |
| void *driver_vp, *driver_fp; |
| struct st_context *st = st_context(ctx); |
| const GLfloat *color; |
| struct pipe_context *pipe = st->pipe; |
| GLboolean write_stencil = GL_FALSE, write_depth = GL_FALSE; |
| struct pipe_sampler_view *sv[2]; |
| int num_sampler_view = 1; |
| struct st_fp_variant *fpv; |
| struct gl_pixelstore_attrib clippedUnpack; |
| |
| /* Mesa state should be up to date by now */ |
| assert(ctx->NewState == 0x0); |
| |
| st_validate_state(st); |
| |
| /* Limit the size of the glDrawPixels to the max texture size. |
| * Strictly speaking, that's not correct but since we don't handle |
| * larger images yet, this is better than crashing. |
| */ |
| clippedUnpack = *unpack; |
| unpack = &clippedUnpack; |
| clamp_size(st->pipe, &width, &height, &clippedUnpack); |
| |
| if (format == GL_DEPTH_STENCIL) |
| write_stencil = write_depth = GL_TRUE; |
| else if (format == GL_STENCIL_INDEX) |
| write_stencil = GL_TRUE; |
| else if (format == GL_DEPTH_COMPONENT) |
| write_depth = GL_TRUE; |
| |
| if (write_stencil && |
| !pipe->screen->get_param(pipe->screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) { |
| /* software fallback */ |
| draw_stencil_pixels(ctx, x, y, width, height, format, type, |
| unpack, pixels); |
| return; |
| } |
| |
| /* |
| * Get vertex/fragment shaders |
| */ |
| if (write_depth || write_stencil) { |
| fpv = get_depth_stencil_fp_variant(st, write_depth, write_stencil); |
| |
| driver_fp = fpv->driver_shader; |
| |
| driver_vp = make_passthrough_vertex_shader(st, GL_TRUE); |
| |
| color = ctx->Current.RasterColor; |
| } |
| else { |
| fpv = get_color_fp_variant(st); |
| |
| driver_fp = fpv->driver_shader; |
| |
| driver_vp = make_passthrough_vertex_shader(st, GL_FALSE); |
| |
| color = NULL; |
| if (st->pixel_xfer.pixelmap_enabled) { |
| sv[1] = st->pixel_xfer.pixelmap_sampler_view; |
| num_sampler_view++; |
| } |
| } |
| |
| /* update fragment program constants */ |
| st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT); |
| |
| /* draw with textured quad */ |
| { |
| struct pipe_resource *pt |
| = make_texture(st, width, height, format, type, unpack, pixels); |
| if (pt) { |
| sv[0] = st_create_texture_sampler_view(st->pipe, pt); |
| |
| if (sv[0]) { |
| /* Create a second sampler view to read stencil. |
| * The stencil is written using the shader stencil export |
| * functionality. */ |
| if (write_stencil) { |
| enum pipe_format stencil_format = |
| util_format_stencil_only(pt->format); |
| |
| sv[1] = st_create_texture_sampler_view_format(st->pipe, pt, |
| stencil_format); |
| num_sampler_view++; |
| } |
| |
| draw_textured_quad(ctx, x, y, ctx->Current.RasterPos[2], |
| width, height, |
| ctx->Pixel.ZoomX, ctx->Pixel.ZoomY, |
| sv, |
| num_sampler_view, |
| driver_vp, |
| driver_fp, |
| color, GL_FALSE, write_depth, write_stencil); |
| pipe_sampler_view_reference(&sv[0], NULL); |
| if (num_sampler_view > 1) |
| pipe_sampler_view_reference(&sv[1], NULL); |
| } |
| pipe_resource_reference(&pt, NULL); |
| } |
| } |
| } |
| |
| |
| |
| /** |
| * Software fallback for glCopyPixels(GL_STENCIL). |
| */ |
| static void |
| copy_stencil_pixels(struct gl_context *ctx, GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty) |
| { |
| struct st_renderbuffer *rbDraw; |
| struct pipe_context *pipe = st_context(ctx)->pipe; |
| enum pipe_transfer_usage usage; |
| struct pipe_transfer *ptDraw; |
| ubyte *drawMap; |
| ubyte *buffer; |
| int i; |
| |
| buffer = malloc(width * height * sizeof(ubyte)); |
| if (!buffer) { |
| _mesa_error(ctx, GL_OUT_OF_MEMORY, "glCopyPixels(stencil)"); |
| return; |
| } |
| |
| /* Get the dest renderbuffer */ |
| rbDraw = st_renderbuffer(ctx->DrawBuffer-> |
| Attachment[BUFFER_STENCIL].Renderbuffer); |
| |
| /* this will do stencil pixel transfer ops */ |
| _mesa_readpixels(ctx, srcx, srcy, width, height, |
| GL_STENCIL_INDEX, GL_UNSIGNED_BYTE, |
| &ctx->DefaultPacking, buffer); |
| |
| if (0) { |
| /* debug code: dump stencil values */ |
| GLint row, col; |
| for (row = 0; row < height; row++) { |
| printf("%3d: ", row); |
| for (col = 0; col < width; col++) { |
| printf("%02x ", buffer[col + row * width]); |
| } |
| printf("\n"); |
| } |
| } |
| |
| if (_mesa_is_format_packed_depth_stencil(rbDraw->Base.Format)) |
| usage = PIPE_TRANSFER_READ_WRITE; |
| else |
| usage = PIPE_TRANSFER_WRITE; |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| dsty = rbDraw->Base.Height - dsty - height; |
| } |
| |
| ptDraw = pipe_get_transfer(pipe, |
| rbDraw->texture, |
| rbDraw->rtt_level, |
| rbDraw->rtt_face + rbDraw->rtt_slice, |
| usage, dstx, dsty, |
| width, height); |
| |
| assert(util_format_get_blockwidth(ptDraw->resource->format) == 1); |
| assert(util_format_get_blockheight(ptDraw->resource->format) == 1); |
| |
| /* map the stencil buffer */ |
| drawMap = pipe_transfer_map(pipe, ptDraw); |
| |
| /* draw */ |
| /* XXX PixelZoom not handled yet */ |
| for (i = 0; i < height; i++) { |
| ubyte *dst; |
| const ubyte *src; |
| int y; |
| |
| y = i; |
| |
| if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
| y = height - y - 1; |
| } |
| |
| dst = drawMap + y * ptDraw->stride; |
| src = buffer + i * width; |
| |
| _mesa_pack_ubyte_stencil_row(rbDraw->Base.Format, width, src, dst); |
| } |
| |
| free(buffer); |
| |
| /* unmap the stencil buffer */ |
| pipe_transfer_unmap(pipe, ptDraw); |
| pipe->transfer_destroy(pipe, ptDraw); |
| } |
| |
| |
| /** |
| * Return renderbuffer to use for reading color pixels for glCopyPixels |
| */ |
| static struct st_renderbuffer * |
| st_get_color_read_renderbuffer(struct gl_context *ctx) |
| { |
| struct gl_framebuffer *fb = ctx->ReadBuffer; |
| struct st_renderbuffer *strb = |
| st_renderbuffer(fb->_ColorReadBuffer); |
| |
| return strb; |
| } |
| |
| |
| /** Do the src/dest regions overlap? */ |
| static GLboolean |
| regions_overlap(GLint srcX, GLint srcY, GLint dstX, GLint dstY, |
| GLsizei width, GLsizei height) |
| { |
| if (srcX + width <= dstX || |
| dstX + width <= srcX || |
| srcY + height <= dstY || |
| dstY + height <= srcY) |
| return GL_FALSE; |
| else |
| return GL_TRUE; |
| } |
| |
| |
| /** |
| * Try to do a glCopyPixels for simple cases with a blit by calling |
| * pipe->resource_copy_region(). |
| * |
| * We can do this when we're copying color pixels (depth/stencil |
| * eventually) with no pixel zoom, no pixel transfer ops, no |
| * per-fragment ops, the src/dest regions don't overlap and the |
| * src/dest pixel formats are the same. |
| */ |
| static GLboolean |
| blit_copy_pixels(struct gl_context *ctx, GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty, GLenum type) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct gl_pixelstore_attrib pack, unpack; |
| GLint readX, readY, readW, readH; |
| |
| if (type == GL_COLOR && |
| ctx->Pixel.ZoomX == 1.0 && |
| ctx->Pixel.ZoomY == 1.0 && |
| ctx->_ImageTransferState == 0x0 && |
| !ctx->Color.BlendEnabled && |
| !ctx->Color.AlphaEnabled && |
| !ctx->Depth.Test && |
| !ctx->Fog.Enabled && |
| !ctx->Stencil.Enabled && |
| !ctx->FragmentProgram.Enabled && |
| !ctx->VertexProgram.Enabled && |
| !ctx->Shader.CurrentFragmentProgram && |
| st_fb_orientation(ctx->ReadBuffer) == st_fb_orientation(ctx->DrawBuffer) && |
| ctx->DrawBuffer->_NumColorDrawBuffers == 1 && |
| !ctx->Query.CondRenderQuery) { |
| struct st_renderbuffer *rbRead, *rbDraw; |
| GLint drawX, drawY; |
| |
| /* |
| * Clip the read region against the src buffer bounds. |
| * We'll still allocate a temporary buffer/texture for the original |
| * src region size but we'll only read the region which is on-screen. |
| * This may mean that we draw garbage pixels into the dest region, but |
| * that's expected. |
| */ |
| readX = srcx; |
| readY = srcy; |
| readW = width; |
| readH = height; |
| pack = ctx->DefaultPacking; |
| if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack)) |
| return GL_TRUE; /* all done */ |
| |
| /* clip against dest buffer bounds and scissor box */ |
| drawX = dstx + pack.SkipPixels; |
| drawY = dsty + pack.SkipRows; |
| unpack = pack; |
| if (!_mesa_clip_drawpixels(ctx, &drawX, &drawY, &readW, &readH, &unpack)) |
| return GL_TRUE; /* all done */ |
| |
| readX = readX - pack.SkipPixels + unpack.SkipPixels; |
| readY = readY - pack.SkipRows + unpack.SkipRows; |
| |
| rbRead = st_get_color_read_renderbuffer(ctx); |
| rbDraw = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); |
| |
| if ((rbRead != rbDraw || |
| !regions_overlap(readX, readY, drawX, drawY, readW, readH)) && |
| rbRead->Base.Format == rbDraw->Base.Format) { |
| struct pipe_box srcBox; |
| |
| /* flip src/dst position if needed */ |
| if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { |
| /* both buffers will have the same orientation */ |
| readY = ctx->ReadBuffer->Height - readY - readH; |
| drawY = ctx->DrawBuffer->Height - drawY - readH; |
| } |
| |
| u_box_2d(readX, readY, readW, readH, &srcBox); |
| |
| pipe->resource_copy_region(pipe, |
| rbDraw->texture, |
| rbDraw->rtt_level, drawX, drawY, 0, |
| rbRead->texture, |
| rbRead->rtt_level, &srcBox); |
| return GL_TRUE; |
| } |
| } |
| |
| return GL_FALSE; |
| } |
| |
| |
| static void |
| st_CopyPixels(struct gl_context *ctx, GLint srcx, GLint srcy, |
| GLsizei width, GLsizei height, |
| GLint dstx, GLint dsty, GLenum type) |
| { |
| struct st_context *st = st_context(ctx); |
| struct pipe_context *pipe = st->pipe; |
| struct pipe_screen *screen = pipe->screen; |
| struct st_renderbuffer *rbRead; |
| void *driver_vp, *driver_fp; |
| struct pipe_resource *pt; |
| struct pipe_sampler_view *sv[2]; |
| int num_sampler_view = 1; |
| GLfloat *color; |
| enum pipe_format srcFormat, texFormat; |
| GLboolean invertTex = GL_FALSE; |
| GLint readX, readY, readW, readH; |
| GLuint sample_count; |
| struct gl_pixelstore_attrib pack = ctx->DefaultPacking; |
| struct st_fp_variant *fpv; |
| |
| st_validate_state(st); |
| |
| if (type == GL_DEPTH_STENCIL) { |
| /* XXX make this more efficient */ |
| st_CopyPixels(ctx, srcx, srcy, width, height, dstx, dsty, GL_STENCIL); |
| st_CopyPixels(ctx, srcx, srcy, width, height, dstx, dsty, GL_DEPTH); |
| return; |
| } |
| |
| if (type == GL_STENCIL) { |
| /* can't use texturing to do stencil */ |
| copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty); |
| return; |
| } |
| |
| if (blit_copy_pixels(ctx, srcx, srcy, width, height, dstx, dsty, type)) |
| return; |
| |
| /* |
| * The subsequent code implements glCopyPixels by copying the source |
| * pixels into a temporary texture that's then applied to a textured quad. |
| * When we draw the textured quad, all the usual per-fragment operations |
| * are handled. |
| */ |
| |
| |
| /* |
| * Get vertex/fragment shaders |
| */ |
| if (type == GL_COLOR) { |
| rbRead = st_get_color_read_renderbuffer(ctx); |
| color = NULL; |
| |
| fpv = get_color_fp_variant(st); |
| driver_fp = fpv->driver_shader; |
| |
| driver_vp = make_passthrough_vertex_shader(st, GL_FALSE); |
| |
| if (st->pixel_xfer.pixelmap_enabled) { |
| sv[1] = st->pixel_xfer.pixelmap_sampler_view; |
| num_sampler_view++; |
| } |
| } |
| else { |
| assert(type == GL_DEPTH); |
| rbRead = st_renderbuffer(ctx->ReadBuffer-> |
| Attachment[BUFFER_DEPTH].Renderbuffer); |
| color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0]; |
| |
| fpv = get_depth_stencil_fp_variant(st, GL_TRUE, GL_FALSE); |
| driver_fp = fpv->driver_shader; |
| |
| driver_vp = make_passthrough_vertex_shader(st, GL_TRUE); |
| } |
| |
| /* update fragment program constants */ |
| st_upload_constants(st, fpv->parameters, PIPE_SHADER_FRAGMENT); |
| |
| sample_count = rbRead->texture->nr_samples; |
| /* I believe this would be legal, presumably would need to do a resolve |
| for color, and for depth/stencil spec says to just use one of the |
| depth/stencil samples per pixel? Need some transfer clarifications. */ |
| assert(sample_count < 2); |
| |
| srcFormat = rbRead->texture->format; |
| |
| if (screen->is_format_supported(screen, srcFormat, st->internal_target, |
| sample_count, |
| PIPE_BIND_SAMPLER_VIEW)) { |
| texFormat = srcFormat; |
| } |
| else { |
| /* srcFormat can't be used as a texture format */ |
| if (type == GL_DEPTH) { |
| texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT, |
| GL_NONE, GL_NONE, st->internal_target, |
| sample_count, PIPE_BIND_DEPTH_STENCIL); |
| assert(texFormat != PIPE_FORMAT_NONE); |
| } |
| else { |
| /* default color format */ |
| texFormat = st_choose_format(screen, GL_RGBA, |
| GL_NONE, GL_NONE, st->internal_target, |
| sample_count, PIPE_BIND_SAMPLER_VIEW); |
| assert(texFormat != PIPE_FORMAT_NONE); |
| } |
| } |
| |
| /* Invert src region if needed */ |
| if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { |
| srcy = ctx->ReadBuffer->Height - srcy - height; |
| invertTex = !invertTex; |
| } |
| |
| /* Clip the read region against the src buffer bounds. |
| * We'll still allocate a temporary buffer/texture for the original |
| * src region size but we'll only read the region which is on-screen. |
| * This may mean that we draw garbage pixels into the dest region, but |
| * that's expected. |
| */ |
| readX = srcx; |
| readY = srcy; |
| readW = width; |
| readH = height; |
| if (!_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack)) { |
| /* The source region is completely out of bounds. Do nothing. |
| * The GL spec says "Results of copies from outside the window, |
| * or from regions of the window that are not exposed, are |
| * hardware dependent and undefined." |
| */ |
| return; |
| } |
| |
| readW = MAX2(0, readW); |
| readH = MAX2(0, readH); |
| |
| /* alloc temporary texture */ |
| pt = alloc_texture(st, width, height, texFormat); |
| if (!pt) |
| return; |
| |
| sv[0] = st_create_texture_sampler_view(st->pipe, pt); |
| if (!sv[0]) { |
| pipe_resource_reference(&pt, NULL); |
| return; |
| } |
| |
| /* Make temporary texture which is a copy of the src region. |
| */ |
| if (srcFormat == texFormat) { |
| struct pipe_box src_box; |
| u_box_2d(readX, readY, readW, readH, &src_box); |
| /* copy source framebuffer surface into mipmap/texture */ |
| pipe->resource_copy_region(pipe, |
| pt, /* dest tex */ |
| 0, /* dest lvl */ |
| pack.SkipPixels, pack.SkipRows, 0, /* dest pos */ |
| rbRead->texture, /* src tex */ |
| rbRead->rtt_level, /* src lvl */ |
| &src_box); |
| |
| } |
| else { |
| /* CPU-based fallback/conversion */ |
| struct pipe_transfer *ptRead = |
| pipe_get_transfer(st->pipe, rbRead->texture, |
| rbRead->rtt_level, |
| rbRead->rtt_face + rbRead->rtt_slice, |
| PIPE_TRANSFER_READ, |
| readX, readY, readW, readH); |
| struct pipe_transfer *ptTex; |
| enum pipe_transfer_usage transfer_usage; |
| |
| if (ST_DEBUG & DEBUG_FALLBACK) |
| debug_printf("%s: fallback processing\n", __FUNCTION__); |
| |
| if (type == GL_DEPTH && util_format_is_depth_and_stencil(pt->format)) |
| transfer_usage = PIPE_TRANSFER_READ_WRITE; |
| else |
| transfer_usage = PIPE_TRANSFER_WRITE; |
| |
| ptTex = pipe_get_transfer(st->pipe, pt, 0, 0, transfer_usage, |
| 0, 0, width, height); |
| |
| /* copy image from ptRead surface to ptTex surface */ |
| if (type == GL_COLOR) { |
| /* alternate path using get/put_tile() */ |
| GLfloat *buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat)); |
| enum pipe_format readFormat, drawFormat; |
| readFormat = util_format_linear(rbRead->texture->format); |
| drawFormat = util_format_linear(pt->format); |
| pipe_get_tile_rgba_format(pipe, ptRead, 0, 0, readW, readH, |
| readFormat, buf); |
| pipe_put_tile_rgba_format(pipe, ptTex, pack.SkipPixels, pack.SkipRows, |
| readW, readH, drawFormat, buf); |
| free(buf); |
| } |
| else { |
| /* GL_DEPTH */ |
| GLuint *buf = (GLuint *) malloc(width * height * sizeof(GLuint)); |
| pipe_get_tile_z(pipe, ptRead, 0, 0, readW, readH, buf); |
| pipe_put_tile_z(pipe, ptTex, pack.SkipPixels, pack.SkipRows, |
| readW, readH, buf); |
| free(buf); |
| } |
| |
| pipe->transfer_destroy(pipe, ptRead); |
| pipe->transfer_destroy(pipe, ptTex); |
| } |
| |
| /* OK, the texture 'pt' contains the src image/pixels. Now draw a |
| * textured quad with that texture. |
| */ |
| draw_textured_quad(ctx, dstx, dsty, ctx->Current.RasterPos[2], |
| width, height, ctx->Pixel.ZoomX, ctx->Pixel.ZoomY, |
| sv, |
| num_sampler_view, |
| driver_vp, |
| driver_fp, |
| color, invertTex, GL_FALSE, GL_FALSE); |
| |
| pipe_resource_reference(&pt, NULL); |
| pipe_sampler_view_reference(&sv[0], NULL); |
| } |
| |
| |
| |
| void st_init_drawpixels_functions(struct dd_function_table *functions) |
| { |
| functions->DrawPixels = st_DrawPixels; |
| functions->CopyPixels = st_CopyPixels; |
| } |
| |
| |
| void |
| st_destroy_drawpix(struct st_context *st) |
| { |
| GLuint i; |
| |
| for (i = 0; i < Elements(st->drawpix.shaders); i++) { |
| if (st->drawpix.shaders[i]) |
| _mesa_reference_fragprog(st->ctx, &st->drawpix.shaders[i], NULL); |
| } |
| |
| st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL); |
| if (st->drawpix.vert_shaders[0]) |
| cso_delete_vertex_shader(st->cso_context, st->drawpix.vert_shaders[0]); |
| if (st->drawpix.vert_shaders[1]) |
| cso_delete_vertex_shader(st->cso_context, st->drawpix.vert_shaders[1]); |
| } |
| |
| #endif /* FEATURE_drawpix */ |