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Fix GLES display of wireframe overlay for non-indexed draws

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baldurk
2018-10-04 15:56:57 +01:00
parent 11cba8d36b
commit bbafa5cd4d
1 changed files with 41 additions and 19 deletions
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renderdoc/driver/gl/gl_overlay.cpp
+41 -19
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@@ -373,26 +373,48 @@ ResourceId GLReplay::RenderOverlay(ResourceId texid, CompType typeHint, DebugOve
const DrawcallDescription *draw = m_pDriver->GetDrawcall(eventId);
// readback the index buffer data
std::vector<byte> idxs;
uint32_t offset = draw->indexOffset * draw->indexByteWidth;
uint32_t length = 1;
drv.glGetNamedBufferParameterivEXT(idxbuf, eGL_BUFFER_SIZE, (GLint *)&length);
idxs.resize(length);
drv.glGetBufferSubData(eGL_ELEMENT_ARRAY_BUFFER, offset,
RDCMIN(GLsizeiptr(length - offset),
GLsizeiptr(draw->numIndices) * GLsizeiptr(draw->indexByteWidth)),
&idxs[0]);
// unbind the real index buffer
drv.glBindBuffer(eGL_ELEMENT_ARRAY_BUFFER, 0);
std::vector<uint32_t> patchedIndices;
PatchLineStripIndexBuffer(
draw, draw->indexByteWidth == 1 ? (uint8_t *)idxs.data() : (uint8_t *)NULL,
draw->indexByteWidth == 2 ? (uint16_t *)idxs.data() : (uint16_t *)NULL,
draw->indexByteWidth == 4 ? (uint32_t *)idxs.data() : (uint32_t *)NULL, patchedIndices);
// readback the index buffer data
if(idxbuf)
{
std::vector<byte> idxs;
uint32_t offset = draw->indexOffset * draw->indexByteWidth;
uint32_t length = 1;
drv.glGetNamedBufferParameterivEXT(idxbuf, eGL_BUFFER_SIZE, (GLint *)&length);
idxs.resize(length);
drv.glGetBufferSubData(
eGL_ELEMENT_ARRAY_BUFFER, offset,
RDCMIN(GLsizeiptr(length - offset),
GLsizeiptr(draw->numIndices) * GLsizeiptr(draw->indexByteWidth)),
&idxs[0]);
// unbind the real index buffer
drv.glBindBuffer(eGL_ELEMENT_ARRAY_BUFFER, 0);
uint32_t expectedSize = draw->numIndices * draw->indexByteWidth;
if(idxs.size() < expectedSize)
{
RDCERR("Index buffer is as large as expected");
idxs.resize(expectedSize);
}
PatchLineStripIndexBuffer(
draw, draw->indexByteWidth == 1 ? (uint8_t *)idxs.data() : (uint8_t *)NULL,
draw->indexByteWidth == 2 ? (uint16_t *)idxs.data() : (uint16_t *)NULL,
draw->indexByteWidth == 4 ? (uint32_t *)idxs.data() : (uint32_t *)NULL, patchedIndices);
}
else
{
// generate 'index' list
std::vector<uint32_t> idxs;
idxs.resize(draw->numIndices);
for(uint32_t i = 0; i < draw->numIndices; i++)
idxs[i] = i;
PatchLineStripIndexBuffer(draw, NULL, NULL, idxs.data(), patchedIndices);
}
GLboolean primRestart = drv.glIsEnabled(eGL_PRIMITIVE_RESTART_FIXED_INDEX);
drv.glEnable(eGL_PRIMITIVE_RESTART_FIXED_INDEX);