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Added scissor for ocornut-imgui.

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This commit is contained in:
Branimir Karadžić 2015-01-19 20:34:54 -08:00
parent 9e52b1d6d9
commit 501d260c3f
2 changed files with 27 additions and 10 deletions
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1
examples/common/imgui/imgui.h
View file

@ -27,6 +27,7 @@
#define IMGUI_H_HEADER_GUARD #define IMGUI_H_HEADER_GUARD
#include <bgfx.h> #include <bgfx.h>
#include <ocornut-imgui/imgui.h>
#define IMGUI_MBUT_LEFT 0x01 #define IMGUI_MBUT_LEFT 0x01
#define IMGUI_MBUT_RIGHT 0x02 #define IMGUI_MBUT_RIGHT 0x02

36
examples/common/imgui/ocornut_imgui.cpp
View file

@ -28,21 +28,24 @@ struct OcornutImguiContext
bgfx::setViewTransform(m_viewId, NULL, ortho); bgfx::setViewTransform(m_viewId, NULL, ortho);
// Render command lists // Render command lists
for (int n = 0; n < _count; n++) { for (int32_t ii = 0; ii < _count; ++ii)
{
bgfx::TransientVertexBuffer tvb; bgfx::TransientVertexBuffer tvb;
uint32_t vtx_size = 0; uint32_t vtx_size = 0;
const ImDrawList* cmd_list = _lists[n]; const ImDrawList* cmd_list = _lists[ii];
const ImDrawVert* vtx_buffer = cmd_list->vtx_buffer.begin(); const ImDrawVert* vtx_buffer = cmd_list->vtx_buffer.begin();
const ImDrawCmd* pcmd_begin = cmd_list->commands.begin(); const ImDrawCmd* pcmd_begin = cmd_list->commands.begin();
const ImDrawCmd* pcmd_end = cmd_list->commands.end(); const ImDrawCmd* pcmd_end = cmd_list->commands.end();
for (const ImDrawCmd* pcmd = pcmd_begin; pcmd != pcmd_end; pcmd++) { for (const ImDrawCmd* pcmd = pcmd_begin; pcmd != pcmd_end; pcmd++)
{
vtx_size += (uint32_t)pcmd->vtx_count; vtx_size += (uint32_t)pcmd->vtx_count;
} }
if (!bgfx::checkAvailTransientVertexBuffer(vtx_size, m_decl)) { if (!bgfx::checkAvailTransientVertexBuffer(vtx_size, m_decl))
{
// not enough space in transient buffer just quit drawing the rest... // not enough space in transient buffer just quit drawing the rest...
break; break;
} }
@ -50,16 +53,22 @@ struct OcornutImguiContext
bgfx::allocTransientVertexBuffer(&tvb, vtx_size, m_decl); bgfx::allocTransientVertexBuffer(&tvb, vtx_size, m_decl);
ImDrawVert* verts = (ImDrawVert*)tvb.data; ImDrawVert* verts = (ImDrawVert*)tvb.data;
memcpy(verts, vtx_buffer, vtx_size * sizeof(ImDrawVert)); memcpy(verts, vtx_buffer, vtx_size * sizeof(ImDrawVert));
uint32_t vtx_offset = 0; uint32_t vtx_offset = 0;
for (const ImDrawCmd* pcmd = pcmd_begin; pcmd != pcmd_end; pcmd++) { for (const ImDrawCmd* pcmd = pcmd_begin; pcmd != pcmd_end; pcmd++)
{
bgfx::setState(0 bgfx::setState(0
| BGFX_STATE_RGB_WRITE | BGFX_STATE_RGB_WRITE
| BGFX_STATE_ALPHA_WRITE | BGFX_STATE_ALPHA_WRITE
| BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA) | BGFX_STATE_BLEND_FUNC(BGFX_STATE_BLEND_SRC_ALPHA, BGFX_STATE_BLEND_INV_SRC_ALPHA)
| BGFX_STATE_MSAA); | BGFX_STATE_MSAA
);
bgfx::setScissor(pcmd->clip_rect.x
, pcmd->clip_rect.y
, pcmd->clip_rect.z-pcmd->clip_rect.x
, pcmd->clip_rect.w-pcmd->clip_rect.y
);
bgfx::setTexture(0, s_tex, m_texture); bgfx::setTexture(0, s_tex, m_texture);
bgfx::setVertexBuffer(&tvb, vtx_offset, pcmd->vtx_count); bgfx::setVertexBuffer(&tvb, vtx_offset, pcmd->vtx_count);
bgfx::setProgram(m_program); bgfx::setProgram(m_program);
@ -82,7 +91,8 @@ struct OcornutImguiContext
const bgfx::Memory* vsmem; const bgfx::Memory* vsmem;
const bgfx::Memory* fsmem; const bgfx::Memory* fsmem;
switch (bgfx::getRendererType()) { switch (bgfx::getRendererType())
{
case bgfx::RendererType::Direct3D9: case bgfx::RendererType::Direct3D9:
vsmem = bgfx::makeRef(vs_ocornut_imgui_dx9, sizeof(vs_ocornut_imgui_dx9)); vsmem = bgfx::makeRef(vs_ocornut_imgui_dx9, sizeof(vs_ocornut_imgui_dx9));
fsmem = bgfx::makeRef(fs_ocornut_imgui_dx9, sizeof(fs_ocornut_imgui_dx9)); fsmem = bgfx::makeRef(fs_ocornut_imgui_dx9, sizeof(fs_ocornut_imgui_dx9));
@ -117,7 +127,13 @@ struct OcornutImguiContext
ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size); ImGui::GetDefaultFontData(NULL, NULL, &png_data, &png_size);
int tex_x, tex_y, pitch, tex_comp; int tex_x, tex_y, pitch, tex_comp;
void* tex_data = stbi_load_from_memory((const unsigned char*)png_data, (int)png_size, &tex_x, &tex_y, &tex_comp, 0); void* tex_data = stbi_load_from_memory( (const unsigned char*)png_data
, (int)png_size
, &tex_x
, &tex_y
, &tex_comp
, 0
);
pitch = tex_x * 4; pitch = tex_x * 4;