summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
-rw-r--r--src/mesa/state_tracker/st_cb_clear.c156
1 files changed, 74 insertions, 82 deletions
diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c
index e3392101a8..2583b4f1bd 100644
--- a/src/mesa/state_tracker/st_cb_clear.c
+++ b/src/mesa/state_tracker/st_cb_clear.c
@@ -198,79 +198,96 @@ draw_quad(GLcontext *ctx,
/**
* Do glClear by drawing a quadrilateral.
+ * The vertices of the quad will be computed from the
+ * ctx->DrawBuffer->_X/Ymin/max fields.
*/
static void
-clear_with_quad(GLcontext *ctx, GLuint x0, GLuint y0,
- GLuint x1, GLuint y1,
+clear_with_quad(GLcontext *ctx,
GLboolean color, GLboolean depth, GLboolean stencil)
{
- static struct st_fragment_program *stfp = NULL;
struct st_context *st = ctx->st;
- struct pipe_alpha_test_state alpha_test;
- struct pipe_blend_state blend;
- struct pipe_depth_state depth_test;
- struct pipe_stencil_state stencil_test;
- struct pipe_setup_state setup;
- struct pipe_fs_state fs;
+ const GLfloat x0 = ctx->DrawBuffer->_Xmin;
+ const GLfloat y0 = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymax;
+ const GLfloat x1 = ctx->DrawBuffer->_Xmax;
+ const GLfloat y1 = ctx->DrawBuffer->Height - ctx->DrawBuffer->_Ymin;
/* alpha state: disabled */
- memset(&alpha_test, 0, sizeof(alpha_test));
- st->pipe->set_alpha_test_state(st->pipe, &alpha_test);
+ {
+ struct pipe_alpha_test_state alpha_test;
+ memset(&alpha_test, 0, sizeof(alpha_test));
+ st->pipe->set_alpha_test_state(st->pipe, &alpha_test);
+ }
/* blend state: RGBA masking */
- memset(&blend, 0, sizeof(blend));
- if (color) {
- if (ctx->Color.ColorMask[0])
- blend.colormask |= PIPE_MASK_R;
- if (ctx->Color.ColorMask[1])
- blend.colormask |= PIPE_MASK_G;
- if (ctx->Color.ColorMask[2])
- blend.colormask |= PIPE_MASK_B;
- if (ctx->Color.ColorMask[3])
- blend.colormask |= PIPE_MASK_A;
- if (st->ctx->Color.DitherFlag)
- blend.dither = 1;
+ {
+ struct pipe_blend_state blend;
+ memset(&blend, 0, sizeof(blend));
+ if (color) {
+ if (ctx->Color.ColorMask[0])
+ blend.colormask |= PIPE_MASK_R;
+ if (ctx->Color.ColorMask[1])
+ blend.colormask |= PIPE_MASK_G;
+ if (ctx->Color.ColorMask[2])
+ blend.colormask |= PIPE_MASK_B;
+ if (ctx->Color.ColorMask[3])
+ blend.colormask |= PIPE_MASK_A;
+ if (st->ctx->Color.DitherFlag)
+ blend.dither = 1;
+ }
+ st->pipe->set_blend_state(st->pipe, &blend);
}
- st->pipe->set_blend_state(st->pipe, &blend);
/* depth state: always pass */
- memset(&depth_test, 0, sizeof(depth_test));
- if (depth) {
- depth_test.enabled = 1;
- depth_test.writemask = 1;
- depth_test.func = PIPE_FUNC_ALWAYS;
+ {
+ struct pipe_depth_state depth_test;
+ memset(&depth_test, 0, sizeof(depth_test));
+ if (depth) {
+ depth_test.enabled = 1;
+ depth_test.writemask = 1;
+ depth_test.func = PIPE_FUNC_ALWAYS;
+ }
+ st->pipe->set_depth_state(st->pipe, &depth_test);
}
- st->pipe->set_depth_state(st->pipe, &depth_test);
/* setup state: nothing */
- memset(&setup, 0, sizeof(setup));
- if (ctx->Scissor.Enabled)
- setup.scissor = 1;
- st->pipe->set_setup_state(st->pipe, &setup);
+ {
+ struct pipe_setup_state setup;
+ memset(&setup, 0, sizeof(setup));
+ if (ctx->Scissor.Enabled)
+ setup.scissor = 1;
+ st->pipe->set_setup_state(st->pipe, &setup);
+ }
/* stencil state: always set to ref value */
- memset(&stencil_test, 0, sizeof(stencil_test));
- if (stencil) {
- stencil_test.front_enabled = 1;
- stencil_test.front_func = PIPE_FUNC_ALWAYS;
- stencil_test.front_fail_op = PIPE_STENCIL_OP_REPLACE;
- stencil_test.front_zpass_op = PIPE_STENCIL_OP_REPLACE;
- stencil_test.front_zfail_op = PIPE_STENCIL_OP_REPLACE;
- stencil_test.ref_value[0] = ctx->Stencil.Clear;
- stencil_test.value_mask[0] = 0xff;
- stencil_test.write_mask[0] = ctx->Stencil.WriteMask[0] & 0xff;
+ {
+ struct pipe_stencil_state stencil_test;
+ memset(&stencil_test, 0, sizeof(stencil_test));
+ if (stencil) {
+ stencil_test.front_enabled = 1;
+ stencil_test.front_func = PIPE_FUNC_ALWAYS;
+ stencil_test.front_fail_op = PIPE_STENCIL_OP_REPLACE;
+ stencil_test.front_zpass_op = PIPE_STENCIL_OP_REPLACE;
+ stencil_test.front_zfail_op = PIPE_STENCIL_OP_REPLACE;
+ stencil_test.ref_value[0] = ctx->Stencil.Clear;
+ stencil_test.value_mask[0] = 0xff;
+ stencil_test.write_mask[0] = ctx->Stencil.WriteMask[0] & 0xff;
+ }
+ st->pipe->set_stencil_state(st->pipe, &stencil_test);
}
- st->pipe->set_stencil_state(st->pipe, &stencil_test);
/* fragment shader state: color pass-through program */
- if (!stfp) {
- stfp = make_color_shader(st);
+ {
+ static struct st_fragment_program *stfp = NULL;
+ struct pipe_fs_state fs;
+ if (!stfp) {
+ stfp = make_color_shader(st);
+ }
+ memset(&fs, 0, sizeof(fs));
+ fs.inputs_read = stfp->Base.Base.InputsRead;
+ fs.tokens = &stfp->tokens[0];
+ fs.constants = NULL;
+ st->pipe->set_fs_state(st->pipe, &fs);
}
- memset(&fs, 0, sizeof(fs));
- fs.inputs_read = stfp->Base.Base.InputsRead;
- fs.tokens = &stfp->tokens[0];
- fs.constants = NULL;
- st->pipe->set_fs_state(st->pipe, &fs);
/* draw quad matching scissor rect (XXX verify coord round-off) */
draw_quad(ctx, x0, y0, x1, y1, ctx->Depth.Clear, ctx->Color.ClearColor);
@@ -306,12 +323,7 @@ clear_color_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
}
else {
/* masking or scissoring */
- clear_with_quad(ctx,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmax,
- ctx->DrawBuffer->_Ymax,
- GL_TRUE, GL_FALSE, GL_FALSE);
+ clear_with_quad(ctx, GL_TRUE, GL_FALSE, GL_FALSE);
}
}
@@ -333,12 +345,7 @@ clear_accum_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
else {
/* scissoring */
/* XXX point framebuffer.cbufs[0] at the accum buffer */
- clear_with_quad(ctx,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmax,
- ctx->DrawBuffer->_Ymax,
- GL_TRUE, GL_FALSE, GL_FALSE);
+ clear_with_quad(ctx, GL_TRUE, GL_FALSE, GL_FALSE);
}
}
@@ -356,12 +363,7 @@ clear_depth_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
}
else {
/* masking or scissoring or combined z/stencil buffer */
- clear_with_quad(ctx,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmax,
- ctx->DrawBuffer->_Ymax,
- GL_FALSE, GL_TRUE, GL_FALSE);
+ clear_with_quad(ctx, GL_FALSE, GL_TRUE, GL_FALSE);
}
}
@@ -381,12 +383,7 @@ clear_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
}
else {
/* masking or scissoring */
- clear_with_quad(ctx,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmax,
- ctx->DrawBuffer->_Ymax,
- GL_FALSE, GL_FALSE, GL_TRUE);
+ clear_with_quad(ctx, GL_FALSE, GL_FALSE, GL_TRUE);
}
}
@@ -421,12 +418,7 @@ clear_depth_stencil_buffer(GLcontext *ctx, struct gl_renderbuffer *rb)
}
else {
/* masking or scissoring */
- clear_with_quad(ctx,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmin,
- ctx->DrawBuffer->_Xmax,
- ctx->DrawBuffer->_Ymax,
- GL_FALSE, GL_TRUE, GL_TRUE);
+ clear_with_quad(ctx, GL_FALSE, GL_TRUE, GL_TRUE);
}
}