0,0 → 1,1703 |
/************************************************************************** |
* |
* Copyright 2007 VMware, Inc. |
* 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 VMWARE 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/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" |
|
|
/** |
* 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 == VARYING_SLOT_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 < ARRAY_SIZE(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 = VARYING_SLOT_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 = VARYING_SLOT_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 = VARYING_SLOT_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 = VARYING_BIT_TEX0 | VARYING_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) |
{ |
const unsigned texcoord_semantic = st->needs_texcoord_semantic ? |
TGSI_SEMANTIC_TEXCOORD : TGSI_SEMANTIC_GENERIC; |
|
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, texcoord_semantic, 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, unsigned bind) |
{ |
struct pipe_resource *pt; |
|
pt = st_texture_create(st, st->internal_target, texFormat, 0, |
width, height, 1, 1, 0, bind); |
|
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; |
mesa_format mformat; |
struct pipe_resource *pt; |
enum pipe_format pipeFormat; |
GLenum baseInternalFormat; |
|
/* Choose a pixel format for the temp texture which will hold the |
* image to draw. |
*/ |
pipeFormat = st_choose_matching_format(st, PIPE_BIND_SAMPLER_VIEW, |
format, type, unpack->SwapBytes); |
|
if (pipeFormat == PIPE_FORMAT_NONE) { |
/* Use the generic approach. */ |
GLenum intFormat = internal_format(ctx, format, type); |
|
pipeFormat = st_choose_format(st, intFormat, format, type, |
PIPE_TEXTURE_2D, 0, PIPE_BIND_SAMPLER_VIEW, |
FALSE); |
assert(pipeFormat != PIPE_FORMAT_NONE); |
} |
|
mformat = st_pipe_format_to_mesa_format(pipeFormat); |
baseInternalFormat = _mesa_get_format_base_format(mformat); |
|
pixels = _mesa_map_pbo_source(ctx, unpack, pixels); |
if (!pixels) |
return NULL; |
|
/* alloc temporary texture */ |
pt = alloc_texture(st, width, height, pipeFormat, PIPE_BIND_SAMPLER_VIEW); |
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; |
|
/* map texture transfer */ |
dest = pipe_transfer_map(pipe, pt, 0, 0, |
PIPE_TRANSFER_WRITE, 0, 0, |
width, height, &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, /* mesa_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); |
|
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, |
cso_get_aux_vertex_buffer_slot(st->cso_context), |
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_tessctrl_shader(cso); |
cso_save_tesseval_shader(cso); |
cso_save_geometry_shader(cso); |
cso_save_vertex_elements(cso); |
cso_save_aux_vertex_buffer_slot(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; |
rasterizer.half_pixel_center = 1; |
rasterizer.bottom_edge_rule = 1; |
rasterizer.depth_clip = !ctx->Transform.DepthClamp; |
rasterizer.scissor = ctx->Scissor.EnableFlags; |
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); |
|
/* disable other shaders */ |
cso_set_tessctrl_shader_handle(cso, NULL); |
cso_set_tesseval_shader_handle(cso, NULL); |
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.translate[0] = 0.5f * w; |
vp.translate[1] = 0.5f * h; |
vp.translate[2] = 0.5f; |
cso_set_viewport(cso, &vp); |
} |
|
cso_set_vertex_elements(cso, 3, st->velems_util_draw); |
cso_set_stream_outputs(st->cso_context, 0, NULL, NULL); |
|
/* 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 * 2.0f - 1.0f; |
|
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_tessctrl_shader(cso); |
cso_restore_tesseval_shader(cso); |
cso_restore_geometry_shader(cso); |
cso_restore_vertex_elements(cso); |
cso_restore_aux_vertex_buffer_slot(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; |
} |
|
stmap = pipe_transfer_map(pipe, strb->texture, |
strb->surface->u.tex.level, |
strb->surface->u.tex.first_layer, |
usage, x, y, |
width, height, &pt); |
|
pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels); |
assert(pixels); |
|
sValues = malloc(width * sizeof(GLubyte)); |
zValues = 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); |
} |
|
|
/** |
* 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; |
|
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 int 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] = { NULL }; |
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) { |
pipe_sampler_view_reference(&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); |
/* we should not be doing pixel map/transfer (see above) */ |
assert(num_sampler_view == 1); |
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; |
} |
|
assert(util_format_get_blockwidth(rbDraw->texture->format) == 1); |
assert(util_format_get_blockheight(rbDraw->texture->format) == 1); |
|
/* map the stencil buffer */ |
drawMap = pipe_transfer_map(pipe, |
rbDraw->texture, |
rbDraw->surface->u.tex.level, |
rbDraw->surface->u.tex.first_layer, |
usage, dstx, dsty, |
width, height, &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); |
} |
|
|
/** |
* 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; |
} |
|
|
/** |
* \return TRUE if two regions overlap, FALSE otherwise |
*/ |
static boolean |
regions_overlap(int srcX0, int srcY0, |
int srcX1, int srcY1, |
int dstX0, int dstY0, |
int dstX1, int dstY1) |
{ |
if (MAX2(srcX0, srcX1) < MIN2(dstX0, dstX1)) |
return FALSE; /* src completely left of dst */ |
|
if (MAX2(dstX0, dstX1) < MIN2(srcX0, srcX1)) |
return FALSE; /* dst completely left of src */ |
|
if (MAX2(srcY0, srcY1) < MIN2(dstY0, dstY1)) |
return FALSE; /* src completely above dst */ |
|
if (MAX2(dstY0, dstY1) < MIN2(srcY0, srcY1)) |
return FALSE; /* dst completely above src */ |
|
return TRUE; /* some overlap */ |
} |
|
|
/** |
* Try to do a glCopyPixels for simple cases with a blit by calling |
* pipe->blit(). |
* |
* 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, and the src/dest regions don't overlap. |
*/ |
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 pipe_screen *screen = pipe->screen; |
struct gl_pixelstore_attrib pack, unpack; |
GLint readX, readY, readW, readH, drawX, drawY, drawW, drawH; |
|
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->CurrentProgram[MESA_SHADER_FRAGMENT] && |
ctx->DrawBuffer->_NumColorDrawBuffers == 1 && |
!ctx->Query.CondRenderQuery && |
!ctx->Query.CurrentOcclusionObject) { |
struct st_renderbuffer *rbRead, *rbDraw; |
|
/* |
* 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; |
|
drawW = readW; |
drawH = readH; |
|
rbRead = st_get_color_read_renderbuffer(ctx); |
rbDraw = st_renderbuffer(ctx->DrawBuffer->_ColorDrawBuffers[0]); |
|
/* Flip src/dst position depending on the orientation of buffers. */ |
if (st_fb_orientation(ctx->ReadBuffer) == Y_0_TOP) { |
readY = rbRead->Base.Height - readY; |
readH = -readH; |
} |
|
if (st_fb_orientation(ctx->DrawBuffer) == Y_0_TOP) { |
/* We can't flip the destination for pipe->blit, so we only adjust |
* its position and flip the source. |
*/ |
drawY = rbDraw->Base.Height - drawY - drawH; |
readY += readH; |
readH = -readH; |
} |
|
if (rbRead != rbDraw || |
!regions_overlap(readX, readY, readX + readW, readY + readH, |
drawX, drawY, drawX + drawW, drawY + drawH)) { |
struct pipe_blit_info blit; |
|
memset(&blit, 0, sizeof(blit)); |
blit.src.resource = rbRead->texture; |
blit.src.level = rbRead->surface->u.tex.level; |
blit.src.format = rbRead->texture->format; |
blit.src.box.x = readX; |
blit.src.box.y = readY; |
blit.src.box.z = rbRead->surface->u.tex.first_layer; |
blit.src.box.width = readW; |
blit.src.box.height = readH; |
blit.src.box.depth = 1; |
blit.dst.resource = rbDraw->texture; |
blit.dst.level = rbDraw->surface->u.tex.level; |
blit.dst.format = rbDraw->texture->format; |
blit.dst.box.x = drawX; |
blit.dst.box.y = drawY; |
blit.dst.box.z = rbDraw->surface->u.tex.first_layer; |
blit.dst.box.width = drawW; |
blit.dst.box.height = drawH; |
blit.dst.box.depth = 1; |
blit.mask = PIPE_MASK_RGBA; |
blit.filter = PIPE_TEX_FILTER_NEAREST; |
|
if (screen->is_format_supported(screen, blit.src.format, |
blit.src.resource->target, |
blit.src.resource->nr_samples, |
PIPE_BIND_SAMPLER_VIEW) && |
screen->is_format_supported(screen, blit.dst.format, |
blit.dst.resource->target, |
blit.dst.resource->nr_samples, |
PIPE_BIND_RENDER_TARGET)) { |
pipe->blit(pipe, &blit); |
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] = { NULL }; |
int num_sampler_view = 1; |
GLfloat *color; |
enum pipe_format srcFormat; |
unsigned srcBind; |
GLboolean invertTex = GL_FALSE; |
GLint readX, readY, readW, readH; |
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) { |
pipe_sampler_view_reference(&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); |
|
/* Choose the format for the temporary texture. */ |
srcFormat = rbRead->texture->format; |
srcBind = PIPE_BIND_SAMPLER_VIEW | |
(type == GL_COLOR ? PIPE_BIND_RENDER_TARGET : PIPE_BIND_DEPTH_STENCIL); |
|
if (!screen->is_format_supported(screen, srcFormat, st->internal_target, 0, |
srcBind)) { |
/* srcFormat is non-renderable. Find a compatible renderable format. */ |
if (type == GL_DEPTH) { |
srcFormat = st_choose_format(st, GL_DEPTH_COMPONENT, GL_NONE, |
GL_NONE, st->internal_target, 0, |
srcBind, FALSE); |
} |
else { |
assert(type == GL_COLOR); |
|
if (util_format_is_float(srcFormat)) { |
srcFormat = st_choose_format(st, GL_RGBA32F, GL_NONE, |
GL_NONE, st->internal_target, 0, |
srcBind, FALSE); |
} |
else if (util_format_is_pure_sint(srcFormat)) { |
srcFormat = st_choose_format(st, GL_RGBA32I, GL_NONE, |
GL_NONE, st->internal_target, 0, |
srcBind, FALSE); |
} |
else if (util_format_is_pure_uint(srcFormat)) { |
srcFormat = st_choose_format(st, GL_RGBA32UI, GL_NONE, |
GL_NONE, st->internal_target, 0, |
srcBind, FALSE); |
} |
else if (util_format_is_snorm(srcFormat)) { |
srcFormat = st_choose_format(st, GL_RGBA16_SNORM, GL_NONE, |
GL_NONE, st->internal_target, 0, |
srcBind, FALSE); |
} |
else { |
srcFormat = st_choose_format(st, GL_RGBA, GL_NONE, |
GL_NONE, st->internal_target, 0, |
srcBind, FALSE); |
} |
} |
|
if (srcFormat == PIPE_FORMAT_NONE) { |
assert(0 && "cannot choose a format for src of CopyPixels"); |
return; |
} |
} |
|
/* 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); |
|
/* Allocate the temporary texture. */ |
pt = alloc_texture(st, width, height, srcFormat, srcBind); |
if (!pt) |
return; |
|
sv[0] = st_create_texture_sampler_view(st->pipe, pt); |
if (!sv[0]) { |
pipe_resource_reference(&pt, NULL); |
return; |
} |
|
/* Copy the src region to the temporary texture. */ |
{ |
struct pipe_blit_info blit; |
|
memset(&blit, 0, sizeof(blit)); |
blit.src.resource = rbRead->texture; |
blit.src.level = rbRead->surface->u.tex.level; |
blit.src.format = rbRead->texture->format; |
blit.src.box.x = readX; |
blit.src.box.y = readY; |
blit.src.box.z = rbRead->surface->u.tex.first_layer; |
blit.src.box.width = readW; |
blit.src.box.height = readH; |
blit.src.box.depth = 1; |
blit.dst.resource = pt; |
blit.dst.level = 0; |
blit.dst.format = pt->format; |
blit.dst.box.x = pack.SkipPixels; |
blit.dst.box.y = pack.SkipRows; |
blit.dst.box.z = 0; |
blit.dst.box.width = readW; |
blit.dst.box.height = readH; |
blit.dst.box.depth = 1; |
blit.mask = util_format_get_mask(pt->format) & ~PIPE_MASK_S; |
blit.filter = PIPE_TEX_FILTER_NEAREST; |
|
pipe->blit(pipe, &blit); |
} |
|
/* 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 < ARRAY_SIZE(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]); |
} |