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glamor_render: Add non-Map/Unmap vertex array for GLES.

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As some GLES implementations' glMapOES /glUnmapOES is
not so efficient, we implement the in memory vertex array
for them.

Signed-off-by: Zhigang Gong <zhigang.gong@linux.intel.com>
This commit is contained in:
Zhigang Gong 2012-01-20 10:56:17 +08:00 committed by Eric Anholt
parent c244969b33
commit 64fef665c9
1 changed files with 64 additions and 16 deletions
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80
glamor/glamor_render.c
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@ -305,30 +305,65 @@ glamor_init_eb(unsigned short *eb, int vert_cnt)
}
}
void
glamor_init_composite_shaders(ScreenPtr screen)
{
glamor_screen_private *glamor_priv;
glamor_gl_dispatch *dispatch;
unsigned short *eb;
float *vb;
int eb_size;
int vb_size;
glamor_priv = glamor_get_screen_private(screen);
dispatch = &glamor_priv->dispatch;
dispatch->glGenBuffers(1, &glamor_priv->vbo);
dispatch->glGenBuffers(1, &glamor_priv->ebo);
dispatch->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, glamor_priv->ebo);
dispatch->glBufferData(GL_ELEMENT_ARRAY_BUFFER,
GLAMOR_COMPOSITE_VBO_VERT_CNT * sizeof(short) * 2,
NULL, GL_DYNAMIC_DRAW);
eb = dispatch->glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY);
eb_size = GLAMOR_COMPOSITE_VBO_VERT_CNT * sizeof(short) * 2;
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP) {
dispatch->glBufferData(GL_ELEMENT_ARRAY_BUFFER,
eb_size,
NULL, GL_DYNAMIC_DRAW);
eb = dispatch->glMapBuffer(GL_ELEMENT_ARRAY_BUFFER, GL_WRITE_ONLY);
}
else {
vb = malloc(GLAMOR_COMPOSITE_VBO_VERT_CNT * sizeof(float) * 2);
if (vb == NULL) {
ErrorF("Failed to allocate vb memory.\n");
exit(1);
}
eb = malloc(eb_size);
}
if (eb == NULL) {
ErrorF("fatal error, fail to get eb.\n");
exit(1);
}
glamor_init_eb(eb, GLAMOR_COMPOSITE_VBO_VERT_CNT);
dispatch->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
dispatch->glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP) {
dispatch->glUnmapBuffer(GL_ELEMENT_ARRAY_BUFFER);
dispatch->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
} else {
dispatch->glBufferData(GL_ELEMENT_ARRAY_BUFFER,
eb_size,
eb, GL_DYNAMIC_DRAW);
dispatch->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
dispatch->glBindBuffer(GL_ARRAY_BUFFER, glamor_priv->vbo);
dispatch->glBufferData(GL_ARRAY_BUFFER,
GLAMOR_COMPOSITE_VBO_VERT_CNT * sizeof(float) * 2,
NULL, GL_DYNAMIC_DRAW);
dispatch->glBindBuffer(GL_ARRAY_BUFFER, 0);
free(eb);
glamor_priv->vb = (char*)vb;
}
}
void
glamor_fini_composite_shaders(ScreenPtr screen)
{
@ -350,7 +385,9 @@ glamor_fini_composite_shaders(ScreenPtr screen)
if (shader->prog)
dispatch->glDeleteProgram(shader->prog);
}
if (glamor_priv->gl_flavor != GLAMOR_GL_DESKTOP
&& glamor_priv->vb)
free(glamor_priv->vb);
}
@ -616,11 +653,12 @@ glamor_setup_composite_vbo(ScreenPtr screen, int n_verts)
glamor_priv->vb_stride += 2 * sizeof(float);
dispatch->glBindBuffer(GL_ARRAY_BUFFER, glamor_priv->vbo);
dispatch->glBufferData(GL_ARRAY_BUFFER,
n_verts * sizeof(float) * 2,
NULL, GL_DYNAMIC_DRAW);
glamor_priv->vb = dispatch->glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP) {
dispatch->glBufferData(GL_ARRAY_BUFFER,
n_verts * sizeof(float) * 2,
NULL, GL_DYNAMIC_DRAW);
glamor_priv->vb = dispatch->glMapBuffer(GL_ARRAY_BUFFER, GL_WRITE_ONLY);
}
dispatch->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, glamor_priv->ebo);
dispatch->glVertexAttribPointer(GLAMOR_VERTEX_POS, 2, GL_FLOAT,
@ -689,7 +727,16 @@ glamor_flush_composite_rects(ScreenPtr screen)
glamor_gl_dispatch *dispatch = &glamor_priv->dispatch;
if (!glamor_priv->render_nr_verts)
return;
dispatch->glUnmapBuffer(GL_ARRAY_BUFFER);
if (glamor_priv->gl_flavor == GLAMOR_GL_DESKTOP)
dispatch->glUnmapBuffer(GL_ARRAY_BUFFER);
else {
dispatch->glBindBuffer(GL_ARRAY_BUFFER, glamor_priv->vbo);
dispatch->glBufferData(GL_ARRAY_BUFFER,
glamor_priv->vbo_offset,
glamor_priv->vb, GL_DYNAMIC_DRAW);
}
dispatch->glDrawElements(GL_TRIANGLES, (glamor_priv->render_nr_verts * 3) / 2,
GL_UNSIGNED_SHORT, NULL);
}
@ -1013,6 +1060,7 @@ glamor_composite_with_shader(CARD8 op,
glamor_set_destination_pixmap_priv_nc(dest_pixmap_priv);
glamor_validate_pixmap(dest_pixmap);
if (!glamor_set_composite_op(screen, op, dest, mask)) {
goto fail;
}