diff options
| -rw-r--r-- | src/mesa/state_tracker/st_cb_clear.c | 156 |
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 e3392101a8b..2583b4f1bd5 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); } } |