initial work for textured-quad glDrawPixels
This commit is contained in:
Brian
278
src/mesa/state_tracker/st_cb_drawpixels.c
Normal file
278
src/mesa/state_tracker/st_cb_drawpixels.c
Normal file
@@ -0,0 +1,278 @@
|
||||
/**************************************************************************
|
||||
*
|
||||
* 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 "imports.h"
|
||||
|
||||
#include "tnl/t_context.h"
|
||||
#include "tnl/t_pipeline.h"
|
||||
|
||||
#include "st_context.h"
|
||||
#include "st_atom.h"
|
||||
#include "st_draw.h"
|
||||
#include "st_cb_drawpixels.h"
|
||||
#include "pipe/p_context.h"
|
||||
#include "pipe/p_defines.h"
|
||||
#include "vf/vf.h"
|
||||
|
||||
|
||||
static void
|
||||
draw_quad(struct st_context *st, GLfloat x, GLfloat y, GLfloat z,
|
||||
GLsizei width, GLsizei height)
|
||||
{
|
||||
static const GLuint attribs[2] = {
|
||||
VF_ATTRIB_POS,
|
||||
VF_ATTRIB_TEX0
|
||||
};
|
||||
GLfloat verts[4][2][4]; /* four verts, two attribs, XYZW */
|
||||
GLuint i;
|
||||
|
||||
/* lower-left */
|
||||
verts[0][0][0] = x;
|
||||
verts[0][0][1] = y;
|
||||
verts[0][1][0] = 0.0;
|
||||
verts[0][1][1] = 0.0;
|
||||
|
||||
/* lower-right */
|
||||
verts[1][0][0] = x + width;
|
||||
verts[1][0][1] = y;
|
||||
verts[1][1][0] = 1.0;
|
||||
verts[1][1][1] = 0.0;
|
||||
|
||||
/* upper-right */
|
||||
verts[2][0][0] = x + width;
|
||||
verts[2][0][1] = y + height;
|
||||
verts[2][1][0] = 1.0;
|
||||
verts[2][1][1] = 1.0;
|
||||
|
||||
/* upper-left */
|
||||
verts[3][0][0] = x;
|
||||
verts[3][0][1] = y + height;
|
||||
verts[3][1][0] = 0.0;
|
||||
verts[3][1][1] = 11.0;
|
||||
|
||||
/* same for all verts: */
|
||||
for (i = 0; i < 4; i++) {
|
||||
verts[i][0][2] = z; /*Z*/
|
||||
verts[i][0][3] = 1.0; /*W*/
|
||||
verts[i][1][2] = 0.0; /*R*/
|
||||
verts[i][1][3] = 1.0; /*Q*/
|
||||
}
|
||||
|
||||
st->pipe->draw_vertices(st->pipe, GL_QUADS,
|
||||
4, (GLfloat *) verts, 2, attribs);
|
||||
}
|
||||
|
||||
|
||||
static void
|
||||
draw_textured_quad(struct st_context *st, GLfloat x, GLfloat y, GLfloat z,
|
||||
GLsizei width, GLsizei height, GLenum format, GLenum type,
|
||||
const struct gl_pixelstore_attrib *unpack,
|
||||
const GLvoid *pixels)
|
||||
{
|
||||
struct pipe_setup_state setup;
|
||||
|
||||
/* setup state: just scissor */
|
||||
memset(&setup, 0, sizeof(setup));
|
||||
if (st->ctx->Scissor.Enabled)
|
||||
setup.scissor = 1;
|
||||
st->pipe->set_setup_state(st->pipe, &setup);
|
||||
|
||||
|
||||
/* XXX upload the texture image */
|
||||
|
||||
draw_quad(st, x, y, z, width, height);
|
||||
|
||||
/* restore GL state */
|
||||
st->pipe->set_setup_state(st->pipe, &st->state.setup);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Check if a GL format/type combination is a match to the given pipe format.
|
||||
* XXX probably move this to a re-usable place.
|
||||
*/
|
||||
static GLboolean
|
||||
compatible_formats(GLenum format, GLenum type, GLuint pipeFormat)
|
||||
{
|
||||
static const GLuint one = 1;
|
||||
GLubyte littleEndian = *((GLubyte *) one);
|
||||
|
||||
if (pipeFormat == PIPE_FORMAT_U_R8_G8_B8_A8 &&
|
||||
format == GL_RGBA &&
|
||||
type == GL_UNSIGNED_BYTE &&
|
||||
!littleEndian) {
|
||||
return GL_TRUE;
|
||||
}
|
||||
else if (pipeFormat == PIPE_FORMAT_U_R8_G8_B8_A8 &&
|
||||
format == GL_ABGR_EXT &&
|
||||
type == GL_UNSIGNED_BYTE &&
|
||||
littleEndian) {
|
||||
return GL_TRUE;
|
||||
}
|
||||
else if (pipeFormat == PIPE_FORMAT_U_A8_R8_G8_B8 &&
|
||||
format == GL_BGRA &&
|
||||
type == GL_UNSIGNED_BYTE &&
|
||||
littleEndian) {
|
||||
return GL_TRUE;
|
||||
}
|
||||
else if (pipeFormat == PIPE_FORMAT_U_R5_G6_B5 &&
|
||||
format == GL_RGB &&
|
||||
type == GL_UNSIGNED_SHORT_5_6_5) {
|
||||
/* endian don't care */
|
||||
return GL_TRUE;
|
||||
}
|
||||
else if (pipeFormat == PIPE_FORMAT_U_R5_G6_B5 &&
|
||||
format == GL_BGR &&
|
||||
type == GL_UNSIGNED_SHORT_5_6_5_REV) {
|
||||
/* endian don't care */
|
||||
return GL_TRUE;
|
||||
}
|
||||
else if (pipeFormat == PIPE_FORMAT_U_S8 &&
|
||||
format == GL_STENCIL_INDEX &&
|
||||
type == GL_UNSIGNED_BYTE) {
|
||||
return GL_TRUE;
|
||||
}
|
||||
else if (pipeFormat == PIPE_FORMAT_U_Z32 &&
|
||||
format == GL_DEPTH_COMPONENT &&
|
||||
type == GL_UNSIGNED_INT) {
|
||||
return GL_TRUE;
|
||||
}
|
||||
/* XXX add more cases */
|
||||
else {
|
||||
return GL_FALSE;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Check if any per-fragment ops are enabled.
|
||||
* XXX probably move this to a re-usable place.
|
||||
*/
|
||||
static GLboolean
|
||||
any_fragment_ops(const struct st_context *st)
|
||||
{
|
||||
if (st->state.alpha_test.enabled ||
|
||||
st->state.blend.blend_enable ||
|
||||
st->state.blend.logicop_enable ||
|
||||
st->state.depth.enabled)
|
||||
/* XXX more checks */
|
||||
return GL_TRUE;
|
||||
else
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Check if any pixel transfer ops are enabled.
|
||||
* XXX probably move this to a re-usable place.
|
||||
*/
|
||||
static GLboolean
|
||||
any_pixel_transfer_ops(const struct st_context *st)
|
||||
{
|
||||
if (st->ctx->Pixel.RedScale != 1.0 ||
|
||||
st->ctx->Pixel.RedBias != 0.0 ||
|
||||
st->ctx->Pixel.GreenScale != 1.0 ||
|
||||
st->ctx->Pixel.GreenBias != 0.0 ||
|
||||
st->ctx->Pixel.BlueScale != 1.0 ||
|
||||
st->ctx->Pixel.BlueBias != 0.0 ||
|
||||
st->ctx->Pixel.AlphaScale != 1.0 ||
|
||||
st->ctx->Pixel.AlphaBias != 0.0 ||
|
||||
st->ctx->Pixel.MapColorFlag)
|
||||
/* XXX more checks */
|
||||
return GL_TRUE;
|
||||
else
|
||||
return GL_FALSE;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Draw image with a blit, or other non-textured quad method.
|
||||
*/
|
||||
static void
|
||||
draw_blit(struct st_context *st,
|
||||
GLsizei width, GLsizei height,
|
||||
GLenum format, GLenum type, const GLvoid *pixels)
|
||||
{
|
||||
|
||||
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Called via ctx->Driver.DrawPixels()
|
||||
*/
|
||||
static void
|
||||
st_drawpixels(GLcontext *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 = ctx->st;
|
||||
struct pipe_surface *ps;
|
||||
GLuint bufferFormat;
|
||||
|
||||
if (format == GL_DEPTH_COMPONENT) {
|
||||
ps = st->state.framebuffer.zbuf;
|
||||
}
|
||||
else if (format == GL_STENCIL_INDEX) {
|
||||
ps = st->state.framebuffer.sbuf;
|
||||
}
|
||||
else {
|
||||
ps = st->state.framebuffer.cbufs[0];
|
||||
}
|
||||
|
||||
bufferFormat = ps->format;
|
||||
|
||||
if (any_fragment_ops(st) ||
|
||||
any_pixel_transfer_ops(st) ||
|
||||
!compatible_formats(format, type, ps->format)) {
|
||||
/* textured quad */
|
||||
draw_textured_quad(st, x, y, ctx->Current.RasterPos[2], width, height,
|
||||
format, type, unpack, pixels);
|
||||
}
|
||||
else {
|
||||
/* blit */
|
||||
draw_blit(st, width, height, format, type, pixels);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
void st_init_cb_drawpixels( struct st_context *st )
|
||||
{
|
||||
struct dd_function_table *functions = &st->ctx->Driver;
|
||||
|
||||
functions->DrawPixels = st_drawpixels;
|
||||
}
|
||||
|
||||
|
||||
void st_destroy_cb_drawpixels( struct st_context *st )
|
||||
{
|
||||
}
|
||||
38
src/mesa/state_tracker/st_cb_drawpixels.h
Normal file
38
src/mesa/state_tracker/st_cb_drawpixels.h
Normal file
@@ -0,0 +1,38 @@
|
||||
/**************************************************************************
|
||||
*
|
||||
* 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.
|
||||
*
|
||||
**************************************************************************/
|
||||
|
||||
|
||||
#ifndef ST_CB_DRAWPIXELS_H
|
||||
#define ST_CB_DRAWPIXELS_H
|
||||
|
||||
|
||||
void st_init_cb_drawpixels( struct st_context *st );
|
||||
|
||||
void st_destroy_cb_drawpixels( struct st_context *st );
|
||||
|
||||
|
||||
#endif /* ST_CB_DRAWPIXELS_H */
|
||||
Reference in New Issue
Block a user