0,0 → 1,1308 |
/************************************************************************** |
* |
* 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/macros.h" |
#include "main/pack.h" |
#include "main/texformat.h" |
#include "main/texstore.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 "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; |
} |
|
|
|
/** |
* Make fragment shader for glDraw/CopyPixels. This shader is made |
* by combining the pixel transfer shader with the user-defined shader. |
* \return pointer to Gallium driver fragment shader |
*/ |
static void * |
combined_drawpix_fragment_program(struct gl_context *ctx) |
{ |
struct st_context *st = st_context(ctx); |
struct st_fragment_program *stfp; |
|
if (st->pixel_xfer.program->serialNo == st->pixel_xfer.xfer_prog_sn |
&& st->fp->serialNo == st->pixel_xfer.user_prog_sn) { |
/* the pixel tranfer program has not changed and the user-defined |
* program has not changed, so re-use the combined program. |
*/ |
stfp = st->pixel_xfer.combined_prog; |
} |
else { |
/* Concatenate the pixel transfer program with the current user- |
* defined program. |
*/ |
if (is_passthrough_program(&st->fp->Base)) { |
stfp = (struct st_fragment_program *) |
_mesa_clone_fragment_program(ctx, &st->pixel_xfer.program->Base); |
} |
else { |
#if 0 |
printf("Base program:\n"); |
_mesa_print_program(&st->fp->Base.Base); |
printf("DrawPix program:\n"); |
_mesa_print_program(&st->pixel_xfer.program->Base.Base); |
#endif |
stfp = (struct st_fragment_program *) |
_mesa_combine_programs(ctx, |
&st->pixel_xfer.program->Base.Base, |
&st->fp->Base.Base); |
} |
|
#if 0 |
{ |
struct gl_program *p = &stfp->Base.Base; |
printf("Combined DrawPixels program:\n"); |
_mesa_print_program(p); |
printf("InputsRead: 0x%x\n", p->InputsRead); |
printf("OutputsWritten: 0x%x\n", p->OutputsWritten); |
_mesa_print_parameter_list(p->Parameters); |
} |
#endif |
|
/* translate to TGSI tokens */ |
st_translate_fragment_program(st, stfp); |
|
/* save new program, update serial numbers */ |
st->pixel_xfer.xfer_prog_sn = st->pixel_xfer.program->serialNo; |
st->pixel_xfer.user_prog_sn = st->fp->serialNo; |
st->pixel_xfer.combined_prog_sn = stfp->serialNo; |
/* can't reference new program directly, already have a reference on it */ |
st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL); |
st->pixel_xfer.combined_prog = stfp; |
} |
|
/* Ideally we'd have updated the pipe constants during the normal |
* st/atom mechanism. But we can't since this is specific to glDrawPixels. |
*/ |
st_upload_constants(st, stfp->Base.Base.Parameters, PIPE_SHADER_FRAGMENT); |
|
return stfp->driver_shader; |
} |
|
|
/** |
* Create fragment shader 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 Gallium driver fragment shader |
*/ |
static void * |
make_fragment_shader_z_stencil(struct st_context *st, GLboolean write_depth, |
GLboolean write_stencil) |
{ |
struct gl_context *ctx = st->ctx; |
struct gl_program *p; |
struct st_fragment_program *stp; |
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]->driver_shader; |
} |
|
/* |
* Create shader now |
*/ |
p = ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 0); |
if (!p) |
return NULL; |
|
p->NumInstructions = write_depth ? 2 : 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++; |
} |
|
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 |= (1 << FRAG_RESULT_DEPTH); |
if (write_stencil) |
p->OutputsWritten |= (1 << FRAG_RESULT_STENCIL); |
|
p->SamplersUsed = 0x1; /* sampler 0 (bit 0) is used */ |
if (write_stencil) |
p->SamplersUsed |= 1 << 1; |
|
stp = st_fragment_program((struct gl_fragment_program *) p); |
|
/* save the new shader */ |
st->drawpix.shaders[shaderIndex] = stp; |
|
st_translate_fragment_program(st, stp); |
|
return stp->driver_shader; |
} |
|
|
|
/** |
* 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 base format for drawing/copying an image |
* of the given format. |
*/ |
static GLenum |
base_format(GLenum format) |
{ |
switch (format) { |
case GL_DEPTH_COMPONENT: |
return GL_DEPTH_COMPONENT; |
case GL_DEPTH_STENCIL: |
return GL_DEPTH_STENCIL; |
case GL_STENCIL_INDEX: |
return GL_STENCIL_INDEX; |
default: |
return GL_RGBA; |
} |
} |
|
|
/** |
* Return a texture internalFormat for drawing/copying an image |
* of the given format and type. |
*/ |
static GLenum |
internal_format(GLenum format, GLenum type) |
{ |
switch (format) { |
case GL_DEPTH_COMPONENT: |
return GL_DEPTH_COMPONENT; |
case GL_DEPTH_STENCIL: |
return GL_DEPTH_STENCIL; |
case GL_STENCIL_INDEX: |
return GL_STENCIL_INDEX; |
default: |
if (_mesa_is_integer_format(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 { |
return GL_RGBA; |
} |
} |
} |
|
|
/** |
* 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, 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; |
GLuint cpp; |
GLenum baseFormat, intFormat; |
|
baseFormat = base_format(format); |
intFormat = internal_format(format, type); |
|
mformat = st_ChooseTextureFormat_renderable(ctx, intFormat, |
format, type, GL_FALSE); |
assert(mformat); |
|
pipeFormat = st_mesa_format_to_pipe_format(mformat); |
assert(pipeFormat); |
cpp = util_format_get_blocksize(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; |
static const GLuint dstImageOffsets = 0; |
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 */ |
baseFormat, /* baseInternalFormat */ |
mformat, /* gl_format */ |
dest, /* dest */ |
0, 0, 0, /* dstX/Y/Zoffset */ |
transfer->stride, /* dstRowStride, bytes */ |
&dstImageOffsets, /* dstImageOffsets */ |
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[4][3][4]; /* four verts, three attribs, XYZW */ |
|
/* 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*/ |
} |
} |
} |
|
{ |
struct pipe_resource *buf; |
|
/* allocate/load buffer object with vertex data */ |
buf = pipe_buffer_create(pipe->screen, |
PIPE_BIND_VERTEX_BUFFER, |
sizeof(verts)); |
pipe_buffer_write(st->pipe, buf, 0, sizeof(verts), verts); |
|
util_draw_vertex_buffer(pipe, buf, 0, |
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); |
cso_save_fragment_sampler_views(cso); |
cso_save_fragment_shader(cso); |
cso_save_vertex_shader(cso); |
cso_save_vertex_elements(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.gl_rasterization_rules = 1; |
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); |
|
|
/* 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, 0, &sampler); |
if (num_sampler_view > 1) { |
cso_single_sampler(cso, 1, &sampler); |
} |
cso_single_sampler_done(cso); |
} |
|
/* 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); |
|
/* texture state: */ |
cso_set_fragment_sampler_views(cso, 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); |
cso_restore_fragment_sampler_views(cso); |
cso_restore_fragment_shader(cso); |
cso_restore_vertex_shader(cso); |
cso_restore_vertex_elements(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; |
GLint skipPixels; |
ubyte *stmap; |
struct gl_pixelstore_attrib clippedUnpack = *unpack; |
|
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_DEPTH_STENCIL && |
util_format_get_component_bits(strb->format, |
UTIL_FORMAT_COLORSPACE_ZS, 0) != 0) |
usage = PIPE_TRANSFER_READ_WRITE; |
else |
usage = PIPE_TRANSFER_WRITE; |
|
pt = pipe_get_transfer(st_context(ctx)->pipe, strb->texture, 0, 0, |
usage, x, y, |
width, height); |
|
stmap = pipe_transfer_map(pipe, pt); |
|
pixels = _mesa_map_pbo_source(ctx, &clippedUnpack, pixels); |
assert(pixels); |
|
/* if width > MAX_WIDTH, have to process image in chunks */ |
skipPixels = 0; |
while (skipPixels < width) { |
const GLint spanX = skipPixels; |
const GLint spanWidth = MIN2(width - skipPixels, MAX_WIDTH); |
GLint row; |
for (row = 0; row < height; row++) { |
GLubyte sValues[MAX_WIDTH]; |
GLuint zValues[MAX_WIDTH]; |
GLenum destType = GL_UNSIGNED_BYTE; |
const GLvoid *source = _mesa_image_address2d(&clippedUnpack, pixels, |
width, height, |
format, type, |
row, skipPixels); |
_mesa_unpack_stencil_span(ctx, spanWidth, destType, sValues, |
type, source, &clippedUnpack, |
ctx->_ImageTransferState); |
|
if (format == GL_DEPTH_STENCIL) { |
_mesa_unpack_depth_span(ctx, spanWidth, GL_UNSIGNED_INT, 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_USCALED: |
{ |
ubyte *dest = stmap + spanY * pt->stride + spanX; |
assert(usage == PIPE_TRANSFER_WRITE); |
memcpy(dest, sValues, spanWidth); |
} |
break; |
case PIPE_FORMAT_Z24_UNORM_S8_USCALED: |
if (format == GL_DEPTH_STENCIL) { |
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
GLint k; |
assert(usage == PIPE_TRANSFER_WRITE); |
for (k = 0; k < spanWidth; k++) { |
dest[k] = zValues[k] | (sValues[k] << 24); |
} |
} |
else { |
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
GLint k; |
assert(usage == PIPE_TRANSFER_READ_WRITE); |
for (k = 0; k < spanWidth; k++) { |
dest[k] = (dest[k] & 0xffffff) | (sValues[k] << 24); |
} |
} |
break; |
case PIPE_FORMAT_S8_USCALED_Z24_UNORM: |
if (format == GL_DEPTH_STENCIL) { |
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
GLint k; |
assert(usage == PIPE_TRANSFER_WRITE); |
for (k = 0; k < spanWidth; k++) { |
dest[k] = (zValues[k] << 8) | (sValues[k] & 0xff); |
} |
} |
else { |
uint *dest = (uint *) (stmap + spanY * pt->stride + spanX*4); |
GLint k; |
assert(usage == PIPE_TRANSFER_READ_WRITE); |
for (k = 0; k < spanWidth; k++) { |
dest[k] = (dest[k] & 0xffffff00) | (sValues[k] & 0xff); |
} |
} |
break; |
default: |
assert(0); |
} |
} |
} |
skipPixels += spanWidth; |
} |
|
_mesa_unmap_pbo_source(ctx, &clippedUnpack); |
|
/* unmap the stencil buffer */ |
pipe_transfer_unmap(pipe, pt); |
pipe->transfer_destroy(pipe, pt); |
} |
|
|
/** |
* 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; |
enum pipe_format stencil_format = PIPE_FORMAT_NONE; |
|
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) { |
enum pipe_format tex_format; |
/* can we write to stencil if not fallback */ |
if (!pipe->screen->get_param(pipe->screen, PIPE_CAP_SHADER_STENCIL_EXPORT)) |
goto stencil_fallback; |
|
tex_format = st_choose_format(st->pipe->screen, base_format(format), |
PIPE_TEXTURE_2D, |
0, PIPE_BIND_SAMPLER_VIEW); |
if (tex_format == PIPE_FORMAT_Z24_UNORM_S8_USCALED) |
stencil_format = PIPE_FORMAT_X24S8_USCALED; |
else if (tex_format == PIPE_FORMAT_S8_USCALED_Z24_UNORM) |
stencil_format = PIPE_FORMAT_S8X24_USCALED; |
else |
stencil_format = PIPE_FORMAT_S8_USCALED; |
if (stencil_format == PIPE_FORMAT_NONE) |
goto stencil_fallback; |
} |
|
/* Mesa state should be up to date by now */ |
assert(ctx->NewState == 0x0); |
|
st_validate_state(st); |
|
if (write_depth || write_stencil) { |
driver_fp = make_fragment_shader_z_stencil(st, write_depth, write_stencil); |
driver_vp = make_passthrough_vertex_shader(st, GL_TRUE); |
color = ctx->Current.RasterColor; |
} |
else { |
driver_fp = combined_drawpix_fragment_program(ctx); |
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++; |
} |
} |
|
/* 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]) { |
if (write_stencil) { |
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); |
} |
} |
return; |
|
stencil_fallback: |
draw_stencil_pixels(ctx, x, y, width, height, format, type, |
unpack, pixels); |
} |
|
|
|
/** |
* 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. If there's a wrapper, use the |
* underlying renderbuffer. |
*/ |
rbDraw = st_renderbuffer(ctx->DrawBuffer->_StencilBuffer); |
if (rbDraw->Base.Wrapped) |
rbDraw = st_renderbuffer(rbDraw->Base.Wrapped); |
|
/* this will do stencil pixel transfer ops */ |
st_read_stencil_pixels(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 (util_format_get_component_bits(rbDraw->format, |
UTIL_FORMAT_COLORSPACE_ZS, 0) != 0) |
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(st_context(ctx)->pipe, |
rbDraw->texture, 0, 0, |
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; |
|
switch (ptDraw->resource->format) { |
case PIPE_FORMAT_Z24_UNORM_S8_USCALED: |
{ |
uint *dst4 = (uint *) dst; |
int j; |
assert(usage == PIPE_TRANSFER_READ_WRITE); |
for (j = 0; j < width; j++) { |
*dst4 = (*dst4 & 0xffffff) | (src[j] << 24); |
dst4++; |
} |
} |
break; |
case PIPE_FORMAT_S8_USCALED_Z24_UNORM: |
{ |
uint *dst4 = (uint *) dst; |
int j; |
assert(usage == PIPE_TRANSFER_READ_WRITE); |
for (j = 0; j < width; j++) { |
*dst4 = (*dst4 & 0xffffff00) | (src[j] & 0xff); |
dst4++; |
} |
} |
break; |
case PIPE_FORMAT_S8_USCALED: |
assert(usage == PIPE_TRANSFER_WRITE); |
memcpy(dst, src, width); |
break; |
default: |
assert(0); |
} |
} |
|
free(buffer); |
|
/* unmap the stencil buffer */ |
pipe_transfer_unmap(pipe, ptDraw); |
pipe->transfer_destroy(pipe, ptDraw); |
} |
|
|
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; |
|
st_validate_state(st); |
|
if (type == GL_STENCIL) { |
/* can't use texturing to do stencil */ |
copy_stencil_pixels(ctx, srcx, srcy, width, height, dstx, dsty); |
return; |
} |
|
if (type == GL_COLOR) { |
rbRead = st_get_color_read_renderbuffer(ctx); |
color = NULL; |
driver_fp = combined_drawpix_fragment_program(ctx); |
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->_DepthBuffer); |
color = ctx->Current.Attrib[VERT_ATTRIB_COLOR0]; |
driver_fp = make_fragment_shader_z_stencil(st, GL_TRUE, GL_FALSE); |
driver_vp = make_passthrough_vertex_shader(st, GL_TRUE); |
} |
|
if (rbRead->Base.Wrapped) |
rbRead = st_renderbuffer(rbRead->Base.Wrapped); |
|
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, 0)) { |
texFormat = srcFormat; |
} |
else { |
/* srcFormat can't be used as a texture format */ |
if (type == GL_DEPTH) { |
texFormat = st_choose_format(screen, GL_DEPTH_COMPONENT, |
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, 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; |
_mesa_clip_readpixels(ctx, &readX, &readY, &readW, &readH, &pack); |
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, |
pack.SkipPixels, pack.SkipRows, 0, /* dest pos */ |
rbRead->texture, /* src tex */ |
0, |
&src_box); |
|
} |
else { |
/* CPU-based fallback/conversion */ |
struct pipe_transfer *ptRead = |
pipe_get_transfer(st->pipe, rbRead->texture, |
0, 0, /* level, layer */ |
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)); |
pipe_get_tile_rgba(pipe, ptRead, 0, 0, readW, readH, buf); |
pipe_put_tile_rgba(pipe, ptTex, pack.SkipPixels, pack.SkipRows, |
readW, readH, 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]) |
st_reference_fragprog(st, &st->drawpix.shaders[i], NULL); |
} |
|
st_reference_fragprog(st, &st->pixel_xfer.combined_prog, NULL); |
if (st->drawpix.vert_shaders[0]) |
ureg_free_tokens(st->drawpix.vert_shaders[0]); |
if (st->drawpix.vert_shaders[1]) |
ureg_free_tokens(st->drawpix.vert_shaders[1]); |
} |
|
#endif /* FEATURE_drawpix */ |