/**************************************************************************
*
- * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * Copyright 2007 VMware, Inc.
* All Rights Reserved.
* Copyright 2009 VMware, Inc. All Rights Reserved.
*
* 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
+ * IN NO EVENT SHALL VMWARE 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:
- * Keith Whitwell <keith@tungstengraphics.com>
+ * Keith Whitwell <keithw@vmware.com>
* Brian Paul
* Michel Dänzer
*/
#include "pipe/p_state.h"
#include "pipe/p_defines.h"
#include "util/u_format.h"
+#include "util/u_framebuffer.h"
#include "util/u_inlines.h"
#include "util/u_simple_shaders.h"
#include "util/u_draw_quad.h"
{
memset(&st->clear, 0, sizeof(st->clear));
- st->clear.raster.gl_rasterization_rules = 1;
+ st->clear.raster.half_pixel_center = 1;
+ st->clear.raster.bottom_edge_rule = 1;
st->clear.raster.depth_clip = 1;
}
if (!st->clear.fs)
st->clear.fs =
util_make_fragment_passthrough_shader(st->pipe, TGSI_SEMANTIC_GENERIC,
- TGSI_INTERPOLATE_CONSTANT);
+ TGSI_INTERPOLATE_CONSTANT,
+ TRUE);
cso_set_fragment_shader_handle(st->cso_context, st->clear.fs);
}
}
+static void
+set_vertex_shader_layered(struct st_context *st)
+{
+ struct pipe_context *pipe = st->pipe;
+
+ if (!pipe->screen->get_param(pipe->screen, PIPE_CAP_TGSI_INSTANCEID) ||
+ !pipe->screen->get_param(pipe->screen, PIPE_CAP_TGSI_VS_LAYER)) {
+ assert(!"Got layered clear, but the VS layer output is unsupported");
+ set_vertex_shader(st);
+ return;
+ }
+
+ if (!st->clear.vs_layered) {
+ st->clear.vs_layered = util_make_layered_clear_vertex_shader(pipe);
+ }
+
+ cso_set_vertex_shader_handle(st->cso_context, st->clear.vs_layered);
+}
+
+
/**
* Draw a screen-aligned quadrilateral.
* Coords are clip coords with y=0=bottom.
static void
draw_quad(struct st_context *st,
float x0, float y0, float x1, float y1, GLfloat z,
+ unsigned num_instances,
const union pipe_color_union *color)
{
- struct pipe_context *pipe = st->pipe;
- struct pipe_resource *vbuf = NULL;
- GLuint i, offset;
+ struct cso_context *cso = st->cso_context;
+ struct pipe_vertex_buffer vb = {0};
+ GLuint i;
float (*vertices)[2][4]; /**< vertex pos + color */
+ vb.stride = 8 * sizeof(float);
+
if (u_upload_alloc(st->uploader, 0, 4 * sizeof(vertices[0]),
- &offset, &vbuf, (void **) &vertices) != PIPE_OK) {
+ &vb.buffer_offset, &vb.buffer,
+ (void **) &vertices) != PIPE_OK) {
return;
}
u_upload_unmap(st->uploader);
/* draw */
- util_draw_vertex_buffer(pipe,
- st->cso_context,
- vbuf,
- cso_get_aux_vertex_buffer_slot(st->cso_context),
- offset,
- PIPE_PRIM_TRIANGLE_FAN,
- 4, /* verts */
- 2); /* attribs/vert */
-
- pipe_resource_reference(&vbuf, NULL);
+ cso_set_vertex_buffers(cso, cso_get_aux_vertex_buffer_slot(cso), 1, &vb);
+ cso_draw_arrays_instanced(cso, PIPE_PRIM_TRIANGLE_FAN, 0, 4,
+ 0, num_instances);
+ pipe_resource_reference(&vb.buffer, NULL);
}
* ctx->DrawBuffer->_X/Ymin/max fields.
*/
static void
-clear_with_quad(struct gl_context *ctx,
- GLboolean color, GLboolean depth, GLboolean stencil)
+clear_with_quad(struct gl_context *ctx, unsigned clear_buffers)
{
struct st_context *st = st_context(ctx);
const struct gl_framebuffer *fb = ctx->DrawBuffer;
const GLfloat x1 = (GLfloat) ctx->DrawBuffer->_Xmax / fb_width * 2.0f - 1.0f;
const GLfloat y0 = (GLfloat) ctx->DrawBuffer->_Ymin / fb_height * 2.0f - 1.0f;
const GLfloat y1 = (GLfloat) ctx->DrawBuffer->_Ymax / fb_height * 2.0f - 1.0f;
- union pipe_color_union clearColor;
+ unsigned num_layers =
+ util_framebuffer_get_num_layers(&st->state.framebuffer);
/*
printf("%s %s%s%s %f,%f %f,%f\n", __FUNCTION__,
{
struct pipe_blend_state blend;
memset(&blend, 0, sizeof(blend));
- if (color) {
+ if (clear_buffers & PIPE_CLEAR_COLOR) {
int num_buffers = ctx->Extensions.EXT_draw_buffers2 ?
ctx->DrawBuffer->_NumColorDrawBuffers : 1;
int i;
blend.independent_blend_enable = num_buffers > 1;
for (i = 0; i < num_buffers; i++) {
+ if (!(clear_buffers & (PIPE_CLEAR_COLOR0 << i)))
+ continue;
+
if (ctx->Color.ColorMask[i][0])
blend.rt[i].colormask |= PIPE_MASK_R;
if (ctx->Color.ColorMask[i][1])
{
struct pipe_depth_stencil_alpha_state depth_stencil;
memset(&depth_stencil, 0, sizeof(depth_stencil));
- if (depth) {
+ if (clear_buffers & PIPE_CLEAR_DEPTH) {
depth_stencil.depth.enabled = 1;
depth_stencil.depth.writemask = 1;
depth_stencil.depth.func = PIPE_FUNC_ALWAYS;
}
- if (stencil) {
+ if (clear_buffers & PIPE_CLEAR_STENCIL) {
struct pipe_stencil_ref stencil_ref;
memset(&stencil_ref, 0, sizeof(stencil_ref));
depth_stencil.stencil[0].enabled = 1;
}
set_fragment_shader(st);
- set_vertex_shader(st);
cso_set_geometry_shader_handle(st->cso_context, NULL);
- if (ctx->DrawBuffer->_ColorDrawBuffers[0]) {
- struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
- GLboolean is_integer = _mesa_is_enum_format_integer(rb->InternalFormat);
+ if (num_layers > 1)
+ set_vertex_shader_layered(st);
+ else
+ set_vertex_shader(st);
- st_translate_color(&ctx->Color.ClearColor,
- &clearColor,
- ctx->DrawBuffer->_ColorDrawBuffers[0]->_BaseFormat,
- is_integer);
- }
+ /* We can't translate the clear color to the colorbuffer format,
+ * because different colorbuffers may have different formats.
+ */
/* draw quad matching scissor rect */
- draw_quad(st, x0, y0, x1, y1, (GLfloat) ctx->Depth.Clear, &clearColor);
+ draw_quad(st, x0, y0, x1, y1, (GLfloat) ctx->Depth.Clear, num_layers,
+ (union pipe_color_union*)&ctx->Color.ClearColor);
/* Restore pipe state */
cso_restore_blend(st->cso_context);
return ctx->Scissor.Enabled &&
(ctx->Scissor.X > 0 ||
ctx->Scissor.Y > 0 ||
- ctx->Scissor.Width < rb->Width ||
- ctx->Scissor.Height < rb->Height);
+ (unsigned) ctx->Scissor.Width < rb->Width ||
+ (unsigned) ctx->Scissor.Height < rb->Height);
+}
+
+
+/**
+ * Return if all of the color channels are masked.
+ */
+static INLINE GLboolean
+is_color_disabled(struct gl_context *ctx, int i)
+{
+ return !ctx->Color.ColorMask[i][0] &&
+ !ctx->Color.ColorMask[i][1] &&
+ !ctx->Color.ColorMask[i][2] &&
+ !ctx->Color.ColorMask[i][3];
}
}
+/**
+ * Return if all of the stencil bits are masked.
+ */
+static INLINE GLboolean
+is_stencil_disabled(struct gl_context *ctx, struct gl_renderbuffer *rb)
+{
+ const GLuint stencilMax = 0xff;
+
+ assert(_mesa_get_format_bits(rb->Format, GL_STENCIL_BITS) > 0);
+ return (ctx->Stencil.WriteMask[0] & stencilMax) == 0;
+}
+
+
/**
* Return if any of the stencil bits are masked.
*/
if (mask & BUFFER_BITS_COLOR) {
for (i = 0; i < ctx->DrawBuffer->_NumColorDrawBuffers; i++) {
- GLuint b = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
+ GLint b = ctx->DrawBuffer->_ColorDrawBufferIndexes[i];
- if (mask & (1 << b)) {
+ if (b >= 0 && mask & (1 << b)) {
struct gl_renderbuffer *rb
= ctx->DrawBuffer->Attachment[b].Renderbuffer;
struct st_renderbuffer *strb = st_renderbuffer(rb);
if (!strb || !strb->surface)
continue;
+ if (is_color_disabled(ctx, colormask_index))
+ continue;
+
if (is_scissor_enabled(ctx, rb) ||
is_color_masked(ctx, colormask_index))
- quad_buffers |= PIPE_CLEAR_COLOR;
+ quad_buffers |= PIPE_CLEAR_COLOR0 << i;
else
- clear_buffers |= PIPE_CLEAR_COLOR;
+ clear_buffers |= PIPE_CLEAR_COLOR0 << i;
}
}
}
if (mask & BUFFER_BIT_DEPTH) {
struct st_renderbuffer *strb = st_renderbuffer(depthRb);
- if (strb->surface) {
+ if (strb->surface && ctx->Depth.Mask) {
if (is_scissor_enabled(ctx, depthRb))
quad_buffers |= PIPE_CLEAR_DEPTH;
else
if (mask & BUFFER_BIT_STENCIL) {
struct st_renderbuffer *strb = st_renderbuffer(stencilRb);
- if (strb->surface) {
+ if (strb->surface && !is_stencil_disabled(ctx, stencilRb)) {
if (is_scissor_enabled(ctx, stencilRb) ||
is_stencil_masked(ctx, stencilRb))
quad_buffers |= PIPE_CLEAR_STENCIL;
}
}
- /*
- * If we're going to use clear_with_quad() for any reason, use it for
- * everything possible.
+ /* Always clear depth and stencil together.
+ * This can only happen when the stencil writemask is not a full mask.
*/
- if (quad_buffers) {
- quad_buffers |= clear_buffers;
- clear_with_quad(ctx,
- quad_buffers & PIPE_CLEAR_COLOR,
- quad_buffers & PIPE_CLEAR_DEPTH,
- quad_buffers & PIPE_CLEAR_STENCIL);
- } else if (clear_buffers) {
- union pipe_color_union clearColor;
-
- if (ctx->DrawBuffer->_ColorDrawBuffers[0]) {
- struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
- GLboolean is_integer = _mesa_is_enum_format_integer(rb->InternalFormat);
-
- st_translate_color(&ctx->Color.ClearColor,
- &clearColor,
- ctx->DrawBuffer->_ColorDrawBuffers[0]->_BaseFormat,
- is_integer);
- }
+ if (quad_buffers & PIPE_CLEAR_DEPTHSTENCIL &&
+ clear_buffers & PIPE_CLEAR_DEPTHSTENCIL) {
+ quad_buffers |= clear_buffers & PIPE_CLEAR_DEPTHSTENCIL;
+ clear_buffers &= ~PIPE_CLEAR_DEPTHSTENCIL;
+ }
- st->pipe->clear(st->pipe, clear_buffers, &clearColor,
+ /* Only use quad-based clearing for the renderbuffers which cannot
+ * use pipe->clear. We want to always use pipe->clear for the other
+ * renderbuffers, because it's likely to be faster.
+ */
+ if (quad_buffers) {
+ clear_with_quad(ctx, quad_buffers);
+ }
+ if (clear_buffers) {
+ /* We can't translate the clear color to the colorbuffer format,
+ * because different colorbuffers may have different formats.
+ */
+ st->pipe->clear(st->pipe, clear_buffers,
+ (union pipe_color_union*)&ctx->Color.ClearColor,
ctx->Depth.Clear, ctx->Stencil.Clear);
}
if (mask & BUFFER_BIT_ACCUM)
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