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Fixes for ocornut-imgui integration, handling negative scissor inputs, removed unnecessary vertex count calculation

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This commit is contained in:
ocornut 2015-06-09 15:31:53 -06:00
parent cf4f43b9f5
commit 4f19cdc436
1 changed files with 7 additions and 12 deletions
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19
examples/common/imgui/ocornut_imgui.cpp
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@ -35,17 +35,10 @@ struct OcornutImguiContext
{
bgfx::TransientVertexBuffer tvb;
uint32_t vtx_size = 0;
const ImDrawList* cmd_list = _lists[ii];
const ImDrawVert* vtx_buffer = cmd_list->vtx_buffer.begin();
const ImDrawCmd* pcmd_begin = cmd_list->commands.begin();
const ImDrawCmd* pcmd_end = cmd_list->commands.end();
for (const ImDrawCmd* pcmd = pcmd_begin; pcmd != pcmd_end; pcmd++)
{
vtx_size += (uint32_t)pcmd->vtx_count;
}
uint32_t vtx_size = (uint32_t)cmd_list->vtx_buffer.size();
if (!bgfx::checkAvailTransientVertexBuffer(vtx_size, m_decl))
{
@ -59,6 +52,8 @@ struct OcornutImguiContext
memcpy(verts, vtx_buffer, vtx_size * sizeof(ImDrawVert));
uint32_t vtx_offset = 0;
const ImDrawCmd* pcmd_begin = cmd_list->commands.begin();
const ImDrawCmd* pcmd_end = cmd_list->commands.end();
for (const ImDrawCmd* pcmd = pcmd_begin; pcmd != pcmd_end; pcmd++)
{
if (0 == pcmd->vtx_count)
@ -72,10 +67,10 @@ struct OcornutImguiContext
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
| BGFX_STATE_MSAA
);
bgfx::setScissor(uint16_t(pcmd->clip_rect.x)
, uint16_t(pcmd->clip_rect.y)
, uint16_t(pcmd->clip_rect.z-pcmd->clip_rect.x)
, uint16_t(pcmd->clip_rect.w-pcmd->clip_rect.y)
bgfx::setScissor(uint16_t(bx::fmax(pcmd->clip_rect.x, 0.0f))
, uint16_t(bx::fmax(pcmd->clip_rect.y, 0.0f))
, uint16_t(bx::fmin(pcmd->clip_rect.z, 65535.0f)-bx::fmax(pcmd->clip_rect.x, 0.0f))
, uint16_t(bx::fmin(pcmd->clip_rect.w, 65535.0f)-bx::fmax(pcmd->clip_rect.y, 0.0f))
);
union { void* ptr; bgfx::TextureHandle handle; } texture = { pcmd->texture_id };