From e7af94416240f79ac609ff096690a1929664944e Mon Sep 17 00:00:00 2001 From: Brian Date: Sun, 14 Oct 2007 12:34:55 -0600 Subject: implement accum ops --- src/mesa/state_tracker/st_cb_accum.c | 170 +++++++++++++++++++++++++++++++++-- 1 file changed, 162 insertions(+), 8 deletions(-) (limited to 'src/mesa') diff --git a/src/mesa/state_tracker/st_cb_accum.c b/src/mesa/state_tracker/st_cb_accum.c index c8fef6c135..03c65db70b 100644 --- a/src/mesa/state_tracker/st_cb_accum.c +++ b/src/mesa/state_tracker/st_cb_accum.c @@ -35,21 +35,175 @@ #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" +/** + * 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. + */ + + +/** 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)); + + (void) pipe->region_map(pipe, acc_ps->region); + + acc_ps->get_tile(acc_ps, xpos, ypos, width, height, accBuf); + + for (i = 0; i < 4 * width * height; i++) { + GLfloat val = accBuf[i] * scale + bias; + accBuf[i] = CLAMP(val, 0.0, 1.0); + } + + acc_ps->put_tile(acc_ps, xpos, ypos, width, height, accBuf); + + _mesa_free(accBuf); + + pipe->region_unmap(pipe, acc_ps->region); +} + + +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) +{ + ubyte *colorMap, *accMap; + GLfloat *colorBuf, *accBuf; + GLint i; + + colorBuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat)); + accBuf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat)); + + colorMap = pipe->region_map(pipe, color_ps->region); + accMap = pipe->region_map(pipe, acc_ps->region); + + color_ps->get_tile(color_ps, xpos, ypos, width, height, colorBuf); + acc_ps->get_tile(acc_ps, xpos, ypos, width, height, accBuf); + + for (i = 0; i < 4 * width * height; i++) { + GLfloat val = accBuf[i] + colorBuf[i] * value; + accBuf[i] = CLAMP(val, 0.0, 1.0); + } + + acc_ps->put_tile(acc_ps, xpos, ypos, width, height, accBuf); + + _mesa_free(colorBuf); + _mesa_free(accBuf); + + pipe->region_unmap(pipe, color_ps->region); + pipe->region_unmap(pipe, acc_ps->region); +} + + +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)); + + (void) pipe->region_map(pipe, color_ps->region); + (void) pipe->region_map(pipe, acc_ps->region); + + color_ps->get_tile(color_ps, xpos, ypos, width, height, buf); + + for (i = 0; i < 4 * width * height; i++) { + GLfloat val = buf[i] * value; + buf[i] = CLAMP(val, 0.0, 1.0); + } + + acc_ps->put_tile(acc_ps, xpos, ypos, width, height, buf); + + _mesa_free(buf); + + pipe->region_unmap(pipe, color_ps->region); + pipe->region_unmap(pipe, acc_ps->region); +} + + +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 GLboolean writeR = ctx->Color.ColorMask[0]; + const GLboolean writeG = ctx->Color.ColorMask[1]; + const GLboolean writeB = ctx->Color.ColorMask[2]; + const GLboolean writeA = ctx->Color.ColorMask[3]; + GLfloat *buf; + GLint i; + + buf = (GLfloat *) malloc(width * height * 4 * sizeof(GLfloat)); + + (void) pipe->region_map(pipe, color_ps->region); + (void) pipe->region_map(pipe, acc_ps->region); + + acc_ps->get_tile(acc_ps, xpos, ypos, width, height, buf); + + for (i = 0; i < width * height; i++) { + if (writeR) { + GLfloat r = buf[i * 4 + 0] * value; + buf[i * 4 + 0] = CLAMP(r, 0.0, 1.0); + } + if (writeG) { + GLfloat g = buf[i * 4 + 1] * value; + buf[i * 4 + 1] = CLAMP(g, 0.0, 1.0); + } + if (writeB) { + GLfloat b = buf[i * 4 + 2] * value; + buf[i * 4 + 2] = CLAMP(b, 0.0, 1.0); + } + if (writeA) { + GLfloat a = buf[i * 4 + 3] * value; + buf[i * 4 + 3] = CLAMP(a, 0.0, 1.0); + } + } + + color_ps->put_tile(color_ps, xpos, ypos, width, height, buf); + + _mesa_free(buf); + + pipe->region_unmap(pipe, color_ps->region); + pipe->region_unmap(pipe, acc_ps->region); +} + 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; @@ -58,24 +212,24 @@ st_Accum(GLcontext *ctx, GLenum op, GLfloat value) 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); -- cgit v1.2.3