void QuadRenderer::initializeGraphicsResources()
{
LOOM_PROFILE_SCOPE(quadInit);
lmLogInfo(gGFXQuadRendererLogGroup, "Initializing Graphics Resources");
GL_Context* ctx = Graphics::context();
// create the single initial vertex buffer
ctx->glGenBuffers(1, &vertexBufferId);
ctx->glBindBuffer(GL_ARRAY_BUFFER, vertexBufferId);
ctx->glBufferData(GL_ARRAY_BUFFER, MAXBATCHQUADS * 4 * sizeof(VertexPosColorTex), 0, GL_STREAM_DRAW);
ctx->glBindBuffer(GL_ARRAY_BUFFER, 0);
// create the single, reused index buffer
ctx->glGenBuffers(1, &indexBufferId);
ctx->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBufferId);
uint16_t *pIndex = (uint16_t*)lmAlloc(gQuadMemoryAllocator, sizeof(unsigned short) * 6 * MAXBATCHQUADS);
uint16_t *pStart = pIndex;
int j = 0;
for (int i = 0; i < 6 * MAXBATCHQUADS; i += 6, j += 4, pIndex += 6)
{
pIndex[0] = j;
pIndex[1] = j + 2;
pIndex[2] = j + 1;
pIndex[3] = j + 1;
pIndex[4] = j + 2;
pIndex[5] = j + 3;
}
ctx->glBufferData(GL_ELEMENT_ARRAY_BUFFER, MAXBATCHQUADS * 6 * sizeof(uint16_t), pStart, GL_STREAM_DRAW);
ctx->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, 0);
lmFree(gQuadMemoryAllocator, pStart);
// Create the system memory buffer for quads.
batchedVertices = static_cast<VertexPosColorTex*>(lmAlloc(gQuadMemoryAllocator, MAXBATCHQUADS * 4 * sizeof(VertexPosColorTex)));
}
static void
Render()
{
static float color[8][3] = {
{1.0, 1.0, 0.0},
{1.0, 0.0, 0.0},
{0.0, 0.0, 0.0},
{0.0, 1.0, 0.0},
{0.0, 1.0, 1.0},
{1.0, 1.0, 1.0},
{1.0, 0.0, 1.0},
{0.0, 0.0, 1.0}
};
static float cube[8][3] = {
{0.5, 0.5, -0.5},
{0.5, -0.5, -0.5},
{-0.5, -0.5, -0.5},
{-0.5, 0.5, -0.5},
{-0.5, 0.5, 0.5},
{0.5, 0.5, 0.5},
{0.5, -0.5, 0.5},
{-0.5, -0.5, 0.5}
};
/* Do our drawing, too. */
ctx.glClearColor(0.0, 0.0, 0.0, 1.0);
ctx.glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
ctx.glBegin(GL_QUADS);
#ifdef SHADED_CUBE
ctx.glColor3fv(color[0]);
ctx.glVertex3fv(cube[0]);
ctx.glColor3fv(color[1]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3fv(color[2]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3fv(color[3]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3fv(color[3]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3fv(color[4]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3fv(color[7]);
ctx.glVertex3fv(cube[7]);
ctx.glColor3fv(color[2]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3fv(color[0]);
ctx.glVertex3fv(cube[0]);
ctx.glColor3fv(color[5]);
ctx.glVertex3fv(cube[5]);
ctx.glColor3fv(color[6]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3fv(color[1]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3fv(color[5]);
ctx.glVertex3fv(cube[5]);
ctx.glColor3fv(color[4]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3fv(color[7]);
ctx.glVertex3fv(cube[7]);
ctx.glColor3fv(color[6]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3fv(color[5]);
ctx.glVertex3fv(cube[5]);
ctx.glColor3fv(color[0]);
ctx.glVertex3fv(cube[0]);
ctx.glColor3fv(color[3]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3fv(color[4]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3fv(color[6]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3fv(color[1]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3fv(color[2]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3fv(color[7]);
ctx.glVertex3fv(cube[7]);
#else /* flat cube */
ctx.glColor3f(1.0, 0.0, 0.0);
ctx.glVertex3fv(cube[0]);
ctx.glVertex3fv(cube[1]);
ctx.glVertex3fv(cube[2]);
ctx.glVertex3fv(cube[3]);
ctx.glColor3f(0.0, 1.0, 0.0);
ctx.glVertex3fv(cube[3]);
ctx.glVertex3fv(cube[4]);
ctx.glVertex3fv(cube[7]);
ctx.glVertex3fv(cube[2]);
ctx.glColor3f(0.0, 0.0, 1.0);
ctx.glVertex3fv(cube[0]);
ctx.glVertex3fv(cube[5]);
ctx.glVertex3fv(cube[6]);
ctx.glVertex3fv(cube[1]);
ctx.glColor3f(0.0, 1.0, 1.0);
ctx.glVertex3fv(cube[5]);
ctx.glVertex3fv(cube[4]);
ctx.glVertex3fv(cube[7]);
ctx.glVertex3fv(cube[6]);
ctx.glColor3f(1.0, 1.0, 0.0);
ctx.glVertex3fv(cube[5]);
ctx.glVertex3fv(cube[0]);
ctx.glVertex3fv(cube[3]);
ctx.glVertex3fv(cube[4]);
ctx.glColor3f(1.0, 0.0, 1.0);
ctx.glVertex3fv(cube[6]);
ctx.glVertex3fv(cube[1]);
ctx.glVertex3fv(cube[2]);
ctx.glVertex3fv(cube[7]);
#endif /* SHADED_CUBE */
ctx.glEnd();
ctx.glMatrixMode(GL_MODELVIEW);
ctx.glRotatef(5.0, 1.0, 1.0, 1.0);
}
int
main(int argc, char *argv[])
{
int fsaa, accel;
int value;
int i, done;
SDL_DisplayMode mode;
SDL_Event event;
Uint32 then, now, frames;
int status;
int dw, dh;
/* Enable standard application logging */
SDL_LogSetPriority(SDL_LOG_CATEGORY_APPLICATION, SDL_LOG_PRIORITY_INFO);
/* Initialize parameters */
fsaa = 0;
accel = -1;
/* Initialize test framework */
state = SDLTest_CommonCreateState(argv, SDL_INIT_VIDEO);
if (!state) {
return 1;
}
for (i = 1; i < argc;) {
int consumed;
consumed = SDLTest_CommonArg(state, i);
if (consumed == 0) {
if (SDL_strcasecmp(argv[i], "--fsaa") == 0 && i+1 < argc) {
fsaa = atoi(argv[i+1]);
consumed = 2;
} else if (SDL_strcasecmp(argv[i], "--accel") == 0 && i+1 < argc) {
accel = atoi(argv[i+1]);
consumed = 2;
} else {
consumed = -1;
}
}
if (consumed < 0) {
SDL_Log("Usage: %s %s [--fsaa n] [--accel n]\n", argv[0],
SDLTest_CommonUsage(state));
quit(1);
}
i += consumed;
}
/* Set OpenGL parameters */
state->window_flags |= SDL_WINDOW_OPENGL;
state->gl_red_size = 5;
state->gl_green_size = 5;
state->gl_blue_size = 5;
state->gl_depth_size = 16;
state->gl_double_buffer = 1;
if (fsaa) {
state->gl_multisamplebuffers = 1;
state->gl_multisamplesamples = fsaa;
}
if (accel >= 0) {
state->gl_accelerated = accel;
}
if (!SDLTest_CommonInit(state)) {
quit(2);
}
/* Create OpenGL context */
context = SDL_GL_CreateContext(state->windows[0]);
if (!context) {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "SDL_GL_CreateContext(): %s\n", SDL_GetError());
quit(2);
}
/* Important: call this *after* creating the context */
if (LoadContext(&ctx) < 0) {
SDL_Log("Could not load GL functions\n");
quit(2);
return 0;
}
if (state->render_flags & SDL_RENDERER_PRESENTVSYNC) {
/* try late-swap-tearing first. If not supported, try normal vsync. */
if (SDL_GL_SetSwapInterval(-1) == -1) {
SDL_GL_SetSwapInterval(1);
}
} else {
SDL_GL_SetSwapInterval(0); /* disable vsync. */
}
SDL_GetCurrentDisplayMode(0, &mode);
SDL_Log("Screen BPP : %d\n", SDL_BITSPERPIXEL(mode.format));
SDL_Log("Swap Interval : %d\n", SDL_GL_GetSwapInterval());
SDL_GetWindowSize(state->windows[0], &dw, &dh);
SDL_Log("Window Size : %d,%d\n", dw, dh);
SDL_GL_GetDrawableSize(state->windows[0], &dw, &dh);
SDL_Log("Draw Size : %d,%d\n", dw, dh);
SDL_Log("\n");
SDL_Log("Vendor : %s\n", ctx.glGetString(GL_VENDOR));
SDL_Log("Renderer : %s\n", ctx.glGetString(GL_RENDERER));
SDL_Log("Version : %s\n", ctx.glGetString(GL_VERSION));
SDL_Log("Extensions : %s\n", ctx.glGetString(GL_EXTENSIONS));
SDL_Log("\n");
status = SDL_GL_GetAttribute(SDL_GL_RED_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_RED_SIZE: requested %d, got %d\n", 5, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_RED_SIZE: %s\n", SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_GREEN_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_GREEN_SIZE: requested %d, got %d\n", 5, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_GREEN_SIZE: %s\n", SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_BLUE_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_BLUE_SIZE: requested %d, got %d\n", 5, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_BLUE_SIZE: %s\n", SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_DEPTH_SIZE, &value);
if (!status) {
SDL_Log("SDL_GL_DEPTH_SIZE: requested %d, got %d\n", 16, value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_DEPTH_SIZE: %s\n", SDL_GetError());
}
if (fsaa) {
status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLEBUFFERS, &value);
if (!status) {
SDL_Log("SDL_GL_MULTISAMPLEBUFFERS: requested 1, got %d\n", value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_MULTISAMPLEBUFFERS: %s\n",
SDL_GetError());
}
status = SDL_GL_GetAttribute(SDL_GL_MULTISAMPLESAMPLES, &value);
if (!status) {
SDL_Log("SDL_GL_MULTISAMPLESAMPLES: requested %d, got %d\n", fsaa,
value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_MULTISAMPLESAMPLES: %s\n",
SDL_GetError());
}
}
if (accel >= 0) {
status = SDL_GL_GetAttribute(SDL_GL_ACCELERATED_VISUAL, &value);
if (!status) {
SDL_Log("SDL_GL_ACCELERATED_VISUAL: requested %d, got %d\n", accel,
value);
} else {
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Failed to get SDL_GL_ACCELERATED_VISUAL: %s\n",
SDL_GetError());
}
}
/* Set rendering settings */
ctx.glMatrixMode(GL_PROJECTION);
ctx.glLoadIdentity();
ctx.glOrtho(-2.0, 2.0, -2.0, 2.0, -20.0, 20.0);
ctx.glMatrixMode(GL_MODELVIEW);
ctx.glLoadIdentity();
ctx.glEnable(GL_DEPTH_TEST);
ctx.glDepthFunc(GL_LESS);
ctx.glShadeModel(GL_SMOOTH);
/* Main render loop */
frames = 0;
then = SDL_GetTicks();
done = 0;
while (!done) {
/* Check for events */
++frames;
while (SDL_PollEvent(&event)) {
SDLTest_CommonEvent(state, &event, &done);
}
for (i = 0; i < state->num_windows; ++i) {
int w, h;
if (state->windows[i] == NULL)
continue;
SDL_GL_MakeCurrent(state->windows[i], context);
SDL_GL_GetDrawableSize(state->windows[i], &w, &h);
ctx.glViewport(0, 0, w, h);
Render();
SDL_GL_SwapWindow(state->windows[i]);
}
}
/* Print out some timing information */
now = SDL_GetTicks();
if (now > then) {
SDL_Log("%2.2f frames per second\n",
((double) frames * 1000) / (now - then));
}
quit(0);
return 0;
}
void QuadRenderer::submit()
{
LOOM_PROFILE_SCOPE(quadSubmit);
if (batchedVertexCount <= 0)
{
return;
}
numFrameSubmit++;
TextureInfo &tinfo = *Texture::getTextureInfo(currentTexture);
if (tinfo.handle != -1)
{
if (tinfo.visible) {
GL_Context* ctx = Graphics::context();
// On iPad 1, the PosColorTex shader, which multiplies texture color with
// vertex color, is 5x slower than PosTex, which just draws the texture
// unmodified. So we select the shader to use appropriately.
//lmLogInfo(gGFXQuadRendererLogGroup, "Handle > %u", tinfo.handle);
if (!Graphics_IsGLStateValid(GFX_OPENGL_STATE_QUAD))
{
sShaderStateValid = false;
sTextureStateValid = false;
sBlendStateValid = false;
}
ctx->glBindBuffer(GL_ARRAY_BUFFER, vertexBufferId);
if (!sShaderStateValid)
{
Loom2D::Matrix mvp;
mvp.copyFromMatrix4(Graphics::getMVP());
sCurrentShader->setMVP(mvp);
sCurrentShader->setTextureId(0);
sCurrentShader->bind();
sShaderStateValid = true;
}
if (!sTextureStateValid)
{
// Set up texture state.
ctx->glActiveTexture(GL_TEXTURE0);
ctx->glBindTexture(GL_TEXTURE_2D, tinfo.handle);
if (tinfo.clampOnly) {
tinfo.wrapU = TEXTUREINFO_WRAP_CLAMP;
tinfo.wrapV = TEXTUREINFO_WRAP_CLAMP;
}
switch (tinfo.wrapU)
{
case TEXTUREINFO_WRAP_CLAMP:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
break;
case TEXTUREINFO_WRAP_MIRROR:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_MIRRORED_REPEAT);
break;
case TEXTUREINFO_WRAP_REPEAT:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
break;
default:
lmAssert(false, "Unsupported wrapU: %d", tinfo.wrapU);
}
switch (tinfo.wrapV)
{
case TEXTUREINFO_WRAP_CLAMP:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
break;
case TEXTUREINFO_WRAP_MIRROR:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_MIRRORED_REPEAT);
break;
case TEXTUREINFO_WRAP_REPEAT:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
break;
default:
lmAssert(false, "Unsupported wrapV: %d", tinfo.wrapV);
}
//*/
switch (tinfo.smoothing)
{
case TEXTUREINFO_SMOOTHING_NONE:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, tinfo.mipmaps ? GL_NEAREST_MIPMAP_NEAREST : GL_NEAREST);
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
break;
case TEXTUREINFO_SMOOTHING_BILINEAR:
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, tinfo.mipmaps ? GL_LINEAR_MIPMAP_LINEAR : GL_LINEAR);
ctx->glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
break;
default:
lmAssert(false, "Unsupported smoothing: %d", tinfo.smoothing);
}
sTextureStateValid = true;
}
if (!sBlendStateValid)
{
if (sBlendEnabled)
{
ctx->glEnable(GL_BLEND);
ctx->glBlendFuncSeparate(sSrcBlend, sDstBlend, sSrcBlend, sDstBlend);
}
else
{
ctx->glDisable(GL_BLEND);
}
sBlendStateValid = true;
}
Graphics_SetCurrentGLState(GFX_OPENGL_STATE_QUAD);
// Setting the buffer to null supposedly enables better performance because it enables the driver to do some optimizations.
ctx->glBufferData(GL_ARRAY_BUFFER, batchedVertexCount*sizeof(VertexPosColorTex), NULL, GL_STREAM_DRAW);
ctx->glBufferData(GL_ARRAY_BUFFER, batchedVertexCount*sizeof(VertexPosColorTex), batchedVertices, GL_STREAM_DRAW);
// And bind indices and draw.
ctx->glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, indexBufferId);
ctx->glDrawElements(GL_TRIANGLES,
(GLsizei)(batchedVertexCount / 4 * 6), GL_UNSIGNED_SHORT,
nullptr);
}
}
batchedVertexCount = 0;
}