+++ /dev/null
-/**************************************************************************
- *
- * 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/macros.h"
-
-#include "st_context.h"
-#include "st_cb_accum.h"
-#include "st_cb_fbo.h"
-#include "st_draw.h"
-#include "st_format.h"
-#include "pipe/p_context.h"
-#include "pipe/p_defines.h"
-#include "pipe/p_inlines.h"
-#include "util/p_tile.h"
-
-
-#define UNCLAMPED_FLOAT_TO_SHORT(us, f) \
- us = ( (short) ( CLAMP((f), -1.0, 1.0) * 32767.0F) )
-
-
-/**
- * For hardware that supports deep color buffers, we could accelerate
- * most/all the accum operations with blending/texturing.
- * For now, just use the get/put_tile() functions and do things in software.
- */
-
-
-static void
-acc_get_tile_rgba(struct pipe_context *pipe, struct pipe_surface *acc_ps,
- uint x, uint y, uint w, uint h, float *p)
-{
- const enum pipe_format f = acc_ps->format;
- const int cpp = acc_ps->cpp;
-
- acc_ps->format = PIPE_FORMAT_R16G16B16A16_SNORM;
- acc_ps->cpp = 8;
-
- pipe_get_tile_rgba(pipe, acc_ps, x, y, w, h, p);
-
- acc_ps->format = f;
- acc_ps->cpp = cpp;
-}
-
-
-static void
-acc_put_tile_rgba(struct pipe_context *pipe, struct pipe_surface *acc_ps,
- uint x, uint y, uint w, uint h, const float *p)
-{
- enum pipe_format f = acc_ps->format;
- const int cpp = acc_ps->cpp;
-
- acc_ps->format = PIPE_FORMAT_R16G16B16A16_SNORM;
- acc_ps->cpp = 8;
-
- pipe_put_tile_rgba(pipe, acc_ps, x, y, w, h, p);
-
- acc_ps->format = f;
- acc_ps->cpp = cpp;
-}
-
-
-
-void
-st_clear_accum_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
-{
- struct pipe_context *pipe = ctx->st->pipe;
- struct st_renderbuffer *acc_strb = st_renderbuffer(rb);
- struct pipe_surface *acc_ps = acc_strb->surface;
- const GLint xpos = ctx->DrawBuffer->_Xmin;
- const GLint ypos = ctx->DrawBuffer->_Ymin;
- const GLint width = ctx->DrawBuffer->_Xmax - xpos;
- const GLint height = ctx->DrawBuffer->_Ymax - ypos;
- const GLfloat r = ctx->Accum.ClearColor[0];
- const GLfloat g = ctx->Accum.ClearColor[1];
- const GLfloat b = ctx->Accum.ClearColor[2];
- const GLfloat a = ctx->Accum.ClearColor[3];
- GLfloat *accBuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
- int i;
-
-#if 1
- GLvoid *map;
-
- map = pipe_surface_map(acc_ps);
- switch (acc_strb->format) {
- case PIPE_FORMAT_R16G16B16A16_SNORM:
- {
- GLshort r = FLOAT_TO_SHORT(ctx->Accum.ClearColor[0]);
- GLshort g = FLOAT_TO_SHORT(ctx->Accum.ClearColor[1]);
- GLshort b = FLOAT_TO_SHORT(ctx->Accum.ClearColor[2]);
- GLshort a = FLOAT_TO_SHORT(ctx->Accum.ClearColor[3]);
- int i, j;
- for (i = 0; i < height; i++) {
- GLshort *dst = ((GLshort *) map
- + ((ypos + i) * acc_ps->pitch + xpos) * 4);
- for (j = 0; j < width; j++) {
- dst[0] = r;
- dst[1] = g;
- dst[2] = b;
- dst[3] = a;
- dst += 4;
- }
- }
- }
- break;
- default:
- _mesa_problem(ctx, "unexpected format in st_clear_accum_buffer()");
- }
-
- pipe_surface_unmap(acc_ps);
-
-#else
- for (i = 0; i < width * height; i++) {
- accBuf[i*4+0] = r;
- accBuf[i*4+1] = g;
- accBuf[i*4+2] = b;
- accBuf[i*4+3] = a;
- }
-
- acc_put_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, accBuf);
-#endif
-}
-
-
-/** For ADD/MULT */
-static void
-accum_mad(struct pipe_context *pipe, GLfloat scale, GLfloat bias,
- GLint xpos, GLint ypos, GLint width, GLint height,
- struct pipe_surface *acc_ps)
-{
- GLfloat *accBuf;
- GLint i;
-
- accBuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
-
- pipe_get_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, accBuf);
-
- for (i = 0; i < 4 * width * height; i++) {
- accBuf[i] = accBuf[i] * scale + bias;
- }
-
- pipe_put_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, accBuf);
-
- free(accBuf);
-}
-
-
-static void
-accum_accum(struct pipe_context *pipe, GLfloat value,
- GLint xpos, GLint ypos, GLint width, GLint height,
- struct pipe_surface *acc_ps,
- struct pipe_surface *color_ps)
-{
- GLfloat *colorBuf, *accBuf;
- GLint i;
-
- colorBuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
- accBuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
-
- pipe_get_tile_rgba(pipe, color_ps, xpos, ypos, width, height, colorBuf);
- acc_get_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, accBuf);
-
- for (i = 0; i < 4 * width * height; i++) {
- accBuf[i] = accBuf[i] + colorBuf[i] * value;
- }
-
- acc_put_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, accBuf);
-
- free(colorBuf);
- free(accBuf);
-}
-
-
-static void
-accum_load(struct pipe_context *pipe, GLfloat value,
- GLint xpos, GLint ypos, GLint width, GLint height,
- struct pipe_surface *acc_ps,
- struct pipe_surface *color_ps)
-{
- GLfloat *buf;
- GLint i;
-
- buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
-
- pipe_get_tile_rgba(pipe, color_ps, xpos, ypos, width, height, buf);
-
- for (i = 0; i < 4 * width * height; i++) {
- buf[i] = buf[i] * value;
- }
-
- acc_put_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, buf);
-
- free(buf);
-}
-
-
-static void
-accum_return(GLcontext *ctx, GLfloat value,
- GLint xpos, GLint ypos, GLint width, GLint height,
- struct pipe_surface *acc_ps,
- struct pipe_surface *color_ps)
-{
- struct pipe_context *pipe = ctx->st->pipe;
- const GLubyte *colormask = ctx->Color.ColorMask;
- GLfloat *abuf, *cbuf = NULL;
- GLint i, ch;
-
- abuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
-
- acc_get_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, abuf);
-
- if (!colormask[0] || !colormask[1] || !colormask[2] || !colormask[3]) {
- cbuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat));
- pipe_get_tile_rgba(pipe, color_ps, xpos, ypos, width, height, cbuf);
- }
-
- for (i = 0; i < width * height; i++) {
- for (ch = 0; ch < 4; ch++) {
- if (colormask[ch]) {
- GLfloat val = abuf[i * 4 + ch] * value;
- abuf[i * 4 + ch] = CLAMP(val, 0.0, 1.0);
- }
- else {
- abuf[i * 4 + ch] = cbuf[i * 4 + ch];
- }
- }
- }
-
- pipe_put_tile_rgba(pipe, color_ps, xpos, ypos, width, height, abuf);
-
- free(abuf);
- if (cbuf)
- free(cbuf);
-}
-
-
-static void
-st_Accum(GLcontext *ctx, GLenum op, GLfloat value)
-{
- struct st_context *st = ctx->st;
- struct pipe_context *pipe = st->pipe;
- struct st_renderbuffer *acc_strb
- = st_renderbuffer(ctx->DrawBuffer->Attachment[BUFFER_ACCUM].Renderbuffer);
- struct st_renderbuffer *color_strb
- = st_renderbuffer(ctx->ReadBuffer->_ColorReadBuffer);
- struct pipe_surface *acc_ps = acc_strb->surface;
- struct pipe_surface *color_ps = color_strb->surface;
-
- const GLint xpos = ctx->DrawBuffer->_Xmin;
- const GLint ypos = ctx->DrawBuffer->_Ymin;
- const GLint width = ctx->DrawBuffer->_Xmax - xpos;
- const GLint height = ctx->DrawBuffer->_Ymax - ypos;
-
- /* make sure color bufs aren't cached */
- pipe->flush(pipe, PIPE_FLUSH_RENDER_CACHE, NULL);
-
- switch (op) {
- case GL_ADD:
- if (value != 0.0F) {
- accum_mad(pipe, 1.0, value, xpos, ypos, width, height, acc_ps);
- }
- break;
- case GL_MULT:
- if (value != 1.0F) {
- accum_mad(pipe, value, 0.0, xpos, ypos, width, height, acc_ps);
- }
- break;
- case GL_ACCUM:
- if (value != 0.0F) {
- accum_accum(pipe, value, xpos, ypos, width, height, acc_ps, color_ps);
- }
- break;
- case GL_LOAD:
- accum_load(pipe, value, xpos, ypos, width, height, acc_ps, color_ps);
- break;
- case GL_RETURN:
- accum_return(ctx, value, xpos, ypos, width, height, acc_ps, color_ps);
- break;
- default:
- assert(0);
- }
-}
-
-
-
-void st_init_accum_functions(struct dd_function_table *functions)
-{
- functions->Accum = st_Accum;
-}
projects / mesa.git / commitdiff