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/*
* Mesa 3-D graphics library
* Version: 6.0.1
*
* Copyright (C) 1999-2004 Brian Paul 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, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include "glheader.h"
#include "imports.h"
#include "colormac.h"
#include "context.h"
#include "drawpix.h"
#include "feedback.h"
#include "macros.h"
#include "state.h"
#include "mtypes.h"
#if _HAVE_FULL_GL
/*
* Execute glDrawPixels
*/
void GLAPIENTRY
_mesa_DrawPixels( GLsizei width, GLsizei height,
GLenum format, GLenum type, const GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (ctx->FragmentProgram.Enabled
&& !ctx->FragmentProgram.Current->Instructions) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glDrawPixels (invalid fragment program)");
return;
}
if (width < 0 || height < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glDrawPixels(width or height < 0" );
return;
}
if (ctx->RenderMode==GL_RENDER) {
GLint x, y;
if (!pixels || !ctx->Current.RasterPosValid) {
return;
}
if (ctx->NewState) {
_mesa_update_state(ctx);
}
/* Round, to satisfy conformance tests (matches SGI's OpenGL) */
x = IROUND(ctx->Current.RasterPos[0]);
y = IROUND(ctx->Current.RasterPos[1]);
ctx->OcclusionResult = GL_TRUE;
ctx->Driver.DrawPixels(ctx, x, y, width, height, format, type,
&ctx->Unpack, pixels);
}
else if (ctx->RenderMode==GL_FEEDBACK) {
/* Feedback the current raster pos info */
if (ctx->Current.RasterPosValid) {
FLUSH_CURRENT( ctx, 0 );
FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
_mesa_feedback_vertex( ctx,
ctx->Current.RasterPos,
ctx->Current.RasterColor,
ctx->Current.RasterIndex,
ctx->Current.RasterTexCoords[0] );
}
}
else if (ctx->RenderMode==GL_SELECT) {
if (ctx->Current.RasterPosValid) {
_mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
}
}
}
void GLAPIENTRY
_mesa_CopyPixels( GLint srcx, GLint srcy, GLsizei width, GLsizei height,
GLenum type )
{
GET_CURRENT_CONTEXT(ctx);
GLint destx, desty;
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (ctx->FragmentProgram.Enabled
&& !ctx->FragmentProgram.Current->Instructions) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glCopyPixels (invalid fragment program)");
return;
}
if (width < 0 || height < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glCopyPixels(width or height < 0)" );
return;
}
if (ctx->NewState) {
_mesa_update_state(ctx);
}
if (ctx->RenderMode==GL_RENDER) {
/* Destination of copy: */
if (!ctx->Current.RasterPosValid) {
return;
}
/* Round, to satisfy conformance tests (matches SGI's OpenGL) */
destx = IROUND(ctx->Current.RasterPos[0]);
desty = IROUND(ctx->Current.RasterPos[1]);
ctx->OcclusionResult = GL_TRUE;
ctx->Driver.CopyPixels( ctx, srcx, srcy, width, height, destx, desty,
type );
}
else if (ctx->RenderMode == GL_FEEDBACK) {
if (ctx->Current.RasterPosValid) {
FLUSH_CURRENT( ctx, 0 );
FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_COPY_PIXEL_TOKEN );
_mesa_feedback_vertex( ctx,
ctx->Current.RasterPos,
ctx->Current.RasterColor,
ctx->Current.RasterIndex,
ctx->Current.RasterTexCoords[0] );
}
}
else if (ctx->RenderMode == GL_SELECT) {
_mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
}
}
#endif
void GLAPIENTRY
_mesa_ReadPixels( GLint x, GLint y, GLsizei width, GLsizei height,
GLenum format, GLenum type, GLvoid *pixels )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (width < 0 || height < 0) {
_mesa_error( ctx, GL_INVALID_VALUE,
"glReadPixels(width=%d height=%d)", width, height );
return;
}
if (!pixels) {
_mesa_error( ctx, GL_INVALID_VALUE, "glReadPixels(pixels)" );
return;
}
if (ctx->NewState)
_mesa_update_state(ctx);
ctx->Driver.ReadPixels(ctx, x, y, width, height,
format, type, &ctx->Pack, pixels);
}
void GLAPIENTRY
_mesa_Bitmap( GLsizei width, GLsizei height,
GLfloat xorig, GLfloat yorig, GLfloat xmove, GLfloat ymove,
const GLubyte *bitmap )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (ctx->FragmentProgram.Enabled
&& !ctx->FragmentProgram.Current->Instructions) {
_mesa_error(ctx, GL_INVALID_OPERATION,
"glBitmap (invalid fragment program)");
return;
}
if (width < 0 || height < 0) {
_mesa_error( ctx, GL_INVALID_VALUE, "glBitmap(width or height < 0)" );
return;
}
if (ctx->Current.RasterPosValid == GL_FALSE) {
return; /* do nothing */
}
if (ctx->RenderMode==GL_RENDER) {
if (bitmap) {
/* Truncate, to satisfy conformance tests (matches SGI's OpenGL). */
GLint x = IFLOOR(ctx->Current.RasterPos[0] - xorig);
GLint y = IFLOOR(ctx->Current.RasterPos[1] - yorig);
if (ctx->NewState) {
_mesa_update_state(ctx);
}
ctx->OcclusionResult = GL_TRUE;
ctx->Driver.Bitmap( ctx, x, y, width, height, &ctx->Unpack, bitmap );
}
}
#if _HAVE_FULL_GL
else if (ctx->RenderMode==GL_FEEDBACK) {
if (ctx->Current.RasterPosValid) {
FLUSH_CURRENT(ctx, 0);
FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_BITMAP_TOKEN );
_mesa_feedback_vertex( ctx,
ctx->Current.RasterPos,
ctx->Current.RasterColor,
ctx->Current.RasterIndex,
ctx->Current.RasterTexCoords[0] );
}
}
else {
ASSERT(ctx->RenderMode == GL_SELECT);
/* Bitmaps don't generate selection hits. See appendix B of 1.1 spec. */
}
#endif
/* update raster position */
ctx->Current.RasterPos[0] += xmove;
ctx->Current.RasterPos[1] += ymove;
}
#if 0 /* experimental */
/*
* Execute glDrawDepthPixelsMESA(). This function accepts both a color
* image and depth (Z) image. Rasterization produces fragments with
* color and Z taken from these images. This function is intended for
* Z-compositing. Normally, this operation requires two glDrawPixels
* calls with stencil testing.
*/
void GLAPIENTRY
_mesa_DrawDepthPixelsMESA( GLsizei width, GLsizei height,
GLenum colorFormat, GLenum colorType,
const GLvoid *colors,
GLenum depthType, const GLvoid *depths )
{
GET_CURRENT_CONTEXT(ctx);
ASSERT_OUTSIDE_BEGIN_END_AND_FLUSH(ctx);
if (width < 0 || height < 0) {
_mesa_error( ctx, GL_INVALID_VALUE,
"glDrawDepthPixelsMESA(width or height < 0" );
return;
}
if (ctx->RenderMode==GL_RENDER) {
GLint x, y;
if (!colors || !depths || !ctx->Current.RasterPosValid) {
return;
}
if (ctx->NewState) {
_mesa_update_state(ctx);
}
/* Round, to satisfy conformance tests (matches SGI's OpenGL) */
x = IROUND(ctx->Current.RasterPos[0]);
y = IROUND(ctx->Current.RasterPos[1]);
ctx->OcclusionResult = GL_TRUE;
ctx->Driver.DrawDepthPixelsMESA(ctx, x, y, width, height,
colorFormat, colorType, colors,
depthType, depths, &ctx->Unpack);
}
else if (ctx->RenderMode==GL_FEEDBACK) {
/* Feedback the current raster pos info */
if (ctx->Current.RasterPosValid) {
FLUSH_CURRENT( ctx, 0 );
FEEDBACK_TOKEN( ctx, (GLfloat) (GLint) GL_DRAW_PIXEL_TOKEN );
_mesa_feedback_vertex( ctx,
ctx->Current.RasterPos,
ctx->Current.RasterColor,
ctx->Current.RasterIndex,
ctx->Current.RasterTexCoords[0] );
}
}
else if (ctx->RenderMode==GL_SELECT) {
if (ctx->Current.RasterPosValid) {
_mesa_update_hitflag( ctx, ctx->Current.RasterPos[2] );
}
}
}
#endif
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