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turnip: fix empty scissor case

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Fixes these two tests:
dEQP-VK.draw.scissor.empty_dynamic_scissor_first_draw
dEQP-VK.draw.scissor.empty_static_scissor

Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5586>
This commit is contained in:
Jonathan Marek 2020-06-20 23:20:32 -04:00 • committed by Marge Bot
parent 7c008c293d
commit 9c0ae5704d
1 changed files with 11 additions and 7 deletions
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18
src/freedreno/vulkan/tu_pipeline.c
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@ -1547,17 +1547,21 @@ tu6_emit_viewport(struct tu_cs *cs, const VkViewport *viewport)
void
tu6_emit_scissor(struct tu_cs *cs, const VkRect2D *scissor)
{
const VkOffset2D min = scissor->offset;
const VkOffset2D max = {
VkOffset2D min = scissor->offset;
VkOffset2D max = {
scissor->offset.x + scissor->extent.width,
scissor->offset.y + scissor->extent.height,
};
tu_cs_emit_pkt4(cs, REG_A6XX_GRAS_SC_SCREEN_SCISSOR_TL_0, 2);
tu_cs_emit(cs, A6XX_GRAS_SC_SCREEN_SCISSOR_TL_0_X(min.x) |
A6XX_GRAS_SC_SCREEN_SCISSOR_TL_0_Y(min.y));
tu_cs_emit(cs, A6XX_GRAS_SC_SCREEN_SCISSOR_TL_0_X(max.x - 1) |
A6XX_GRAS_SC_SCREEN_SCISSOR_TL_0_Y(max.y - 1));
/* special case for empty scissor with max == 0 to avoid overflow */
if (max.x == 0)
min.x = max.x = 1;
if (max.y == 0)
min.y = max.y = 1;
tu_cs_emit_regs(cs,
A6XX_GRAS_SC_SCREEN_SCISSOR_TL_0(.x = min.x, .y = min.y),
A6XX_GRAS_SC_SCREEN_SCISSOR_BR_0(.x = max.x - 1, .y = max.y - 1));
}
void