#include "main/macros.h"
#include "st_context.h"
-#include "st_atom.h"
#include "st_cache.h"
-#include "st_draw.h"
-#include "st_program.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 "pipe/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.
+ */
+
+
+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;
+
+ 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;
+ }
+
+ pipe_put_tile_rgba(pipe, acc_ps, xpos, ypos, width, height, accBuf);
+}
+
+
+/** 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);
+ pipe_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;
+ }
+
+ pipe_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;
+ }
+
+ pipe_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));
+
+ pipe_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);
+
switch (op) {
case GL_ADD:
if (value != 0.0F) {
- accum_add(ctx, value, xpos, ypos, width, height);
+ accum_mad(pipe, 1.0, value, xpos, ypos, width, height, acc_ps);
}
break;
case GL_MULT:
if (value != 1.0F) {
- accum_mult(ctx, value, xpos, ypos, width, height);
+ accum_mad(pipe, value, 0.0, xpos, ypos, width, height, acc_ps);
}
break;
case GL_ACCUM:
if (value != 0.0F) {
- accum_accum(ctx, value, xpos, ypos, width, height);
+ accum_accum(pipe, value, xpos, ypos, width, height, acc_ps, color_ps);
}
break;
case GL_LOAD:
- accum_load(ctx, value, xpos, ypos, width, height);
+ accum_load(pipe, value, xpos, ypos, width, height, acc_ps, color_ps);
break;
case GL_RETURN:
- accum_return(ctx, value, xpos, ypos, width, height);
+ accum_return(ctx, value, xpos, ypos, width, height, acc_ps, color_ps);
break;
default:
assert(0);
projects / mesa.git / blobdiff