OpenGL Renderer:
- Copy read PBO pixels into our own buffer before unmapping the pointer. This is to help avoid tripping up certain drivers. - Do some minor code cleanup.
This commit is contained in:
rogerman
parent
c7466bc4a1
commit
30ea51bce0
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@ -61,11 +61,11 @@ static void ENDGL() {
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#endif
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// We're not exactly committing to OpenGL 3.2 Core Profile just yet, so redefine APPLE
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// extensions for VAO as a temporary measure.
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#ifdef GL_APPLE_vertex_array_object
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#define glGenVertexArrays(a, b) glGenVertexArraysAPPLE(a, b)
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#define glBindVertexArray(a) glBindVertexArrayAPPLE(a)
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#define glDeleteVertexArrays(a, b) glDeleteVertexArraysAPPLE(a, b)
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// extensions as a temporary measure.
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#if defined(GL_APPLE_vertex_array_object) && !defined(GL_ARB_vertex_array_object)
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#define glGenVertexArrays(n, ids) glGenVertexArraysAPPLE(n, ids)
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#define glBindVertexArray(id) glBindVertexArrayAPPLE(id)
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#define glDeleteVertexArrays(n, ids) glDeleteVertexArraysAPPLE(n, ids)
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#endif
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#else
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#include <GL/gl.h>
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@ -140,8 +140,6 @@ static GLuint vboVertexID;
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// PBO
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static GLuint pboRenderDataID[2];
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static u8 *pboRenderBuffer[2] = {NULL, NULL};
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static bool pboHasNewData[2] = {false, false};
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static unsigned int pboBufferIndex = 0;
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// Shader states
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static GLuint vertexShaderID;
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@ -172,8 +170,9 @@ static std::queue<GLuint> freeTextureIds;
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static GLfloat *color4fBuffer = NULL;
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static GLushort *vertIndexBuffer = NULL;
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static DS_ALIGN(16) u8 GPU_screen3D[256 * 192 * sizeof(u32)];
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static bool gpuScreen3DHasNewData = false;
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static DS_ALIGN(16) u8 GPU_screen3D[2][256 * 192 * sizeof(u32)];
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static bool gpuScreen3DHasNewData[2] = {false, false};
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static unsigned int gpuScreen3DBufferIndex = 0;
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// Lookup Tables
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static CACHE_ALIGN GLfloat material_8bit_to_float[255] = {0};
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@ -254,7 +253,7 @@ OGLEXT(PFNGLBLITFRAMEBUFFEREXTPROC,glBlitFramebufferEXT);
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OGLEXT(PFNGLACTIVETEXTUREPROC,glActiveTexture)
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#endif
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static void OGLConvertFramebuffer(u8 *pixBuffer)
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static void OGLConvertFramebuffer(const u8 *pixBuffer)
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{
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if (pixBuffer == NULL)
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{
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@ -289,35 +288,31 @@ static void OGLConvertFramebuffer(u8 *pixBuffer)
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static void* execReadPixelsTask(void *arg)
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{
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u8 *pixBuffer = NULL;
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const unsigned int bufferIndex = *(unsigned int *)arg;
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u8 *pixBuffer = GPU_screen3D[bufferIndex];
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if(!BEGINGL()) return 0;
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if (isPBOSupported)
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{
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unsigned int bufferIndex = *(unsigned int *)arg;
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if(!BEGINGL()) return 0;
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, pboRenderDataID[bufferIndex]);
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pboRenderBuffer[bufferIndex] = (u8 *)glMapBufferARB(GL_PIXEL_PACK_BUFFER_ARB, GL_READ_ONLY_ARB);
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if (pboRenderBuffer[bufferIndex] != NULL)
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{
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memcpy(pixBuffer, pboRenderBuffer[bufferIndex], 256 * 192 * sizeof(u32));
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glUnmapBufferARB(GL_PIXEL_PACK_BUFFER_ARB);
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}
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, 0);
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ENDGL();
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pixBuffer = pboRenderBuffer[bufferIndex];
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}
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else
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{
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if(!BEGINGL()) return 0;
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glReadPixels(0, 0, 256, 192, GL_BGRA_EXT, GL_UNSIGNED_BYTE, GPU_screen3D);
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ENDGL();
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pixBuffer = GPU_screen3D;
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glReadPixels(0, 0, 256, 192, GL_BGRA_EXT, GL_UNSIGNED_BYTE, pixBuffer);
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}
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ENDGL();
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OGLConvertFramebuffer(pixBuffer);
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return 0;
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@ -508,8 +503,12 @@ static void OGLReset()
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if (currTexture)
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delete currTexture;
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currTexture = NULL;
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memset(GPU_screen3D,0,sizeof(GPU_screen3D));
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for (unsigned int i = 0; i < 2; i++)
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{
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memset(GPU_screen3D[i], 0, sizeof(GPU_screen3D[i]));
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gpuScreen3DHasNewData[i] = false;
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}
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if (isFBOSupported)
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{
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@ -679,15 +678,10 @@ static char OGLInit(void)
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, pboRenderDataID[i]);
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glBufferDataARB(GL_PIXEL_PACK_BUFFER_ARB, 256 * 192 * sizeof(u32), NULL, GL_STREAM_READ_ARB);
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pboRenderBuffer[i] = NULL;
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pboHasNewData[i] = false;
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}
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, 0);
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}
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else
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{
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gpuScreen3DHasNewData = false;
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}
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// Render State Setup (common to both shaders and fixed-function pipeline)
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xglEnable(GL_DEPTH_TEST);
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@ -880,6 +874,9 @@ static void OGLClose()
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isReadPixelsWorking = false;
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}
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gpuScreen3DHasNewData[0] = false;
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gpuScreen3DHasNewData[1] = false;
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delete [] vertIndexBuffer;
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vertIndexBuffer = NULL;
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@ -933,12 +930,6 @@ static void OGLClose()
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glDeleteBuffersARB(2, pboRenderDataID);
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pboRenderBuffer[0] = NULL;
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pboRenderBuffer[1] = NULL;
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pboHasNewData[0] = false;
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pboHasNewData[1] = false;
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}
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else
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{
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gpuScreen3DHasNewData = false;
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}
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// FBO
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@ -983,7 +974,7 @@ static void texDeleteCallback(TexCacheItem* item)
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currTexture = NULL;
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}
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static void setTexture(unsigned int format, unsigned int texpal)
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static void setTexture(u32 format, u32 texpal)
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{
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if (format == 0 || currentTexParams.texFormat == TEXMODE_NONE)
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{
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@ -1236,6 +1227,20 @@ static void GL_ReadFramebuffer()
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isReadPixelsWorking = false;
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}
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bufferIndex = (bufferIndex + 1) & 0x01;
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gpuScreen3DBufferIndex = bufferIndex;
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if (isPBOSupported)
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{
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if(!BEGINGL()) return;
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, pboRenderDataID[bufferIndex]);
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glReadPixels(0, 0, 256, 192, GL_BGRA_EXT, GL_UNSIGNED_BYTE, 0);
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, 0);
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ENDGL();
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}
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// If multithreading is ENABLED, call glReadPixels() on a separate thread
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// (or glMapBuffer()/glUnmapBuffer() if PBOs are supported). This is a big
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// deal, since these functions can cause the thread to block. If 3D rendering
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@ -1251,39 +1256,14 @@ static void GL_ReadFramebuffer()
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// H-Blank, and let that logic determine whether a pixel read is needed or not.
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// This can save us some time in cases where games don't require the 3D layer
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// for this particular frame.
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if (isPBOSupported)
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if (enableMultithreading)
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{
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if(!BEGINGL()) return;
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pboBufferIndex = (pboBufferIndex + 1) % 2;
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bufferIndex = pboBufferIndex;
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, pboRenderDataID[pboBufferIndex]);
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glReadPixels(0, 0, 256, 192, GL_BGRA_EXT, GL_UNSIGNED_BYTE, 0);
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glBindBufferARB(GL_PIXEL_PACK_BUFFER_ARB, 0);
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ENDGL();
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if (enableMultithreading)
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{
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isReadPixelsWorking = true;
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oglReadPixelsTask.execute(execReadPixelsTask, &bufferIndex);
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}
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else
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{
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pboHasNewData[pboBufferIndex] = true;
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}
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isReadPixelsWorking = true;
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oglReadPixelsTask.execute(&execReadPixelsTask, &bufferIndex);
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}
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else
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{
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if (enableMultithreading)
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{
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isReadPixelsWorking = true;
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oglReadPixelsTask.execute(execReadPixelsTask, &bufferIndex);
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}
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else
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{
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gpuScreen3DHasNewData = true;
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}
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gpuScreen3DHasNewData[bufferIndex] = true;
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}
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}
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@ -1661,15 +1641,10 @@ static u8* OGLGetLineData(u8 lineNumber)
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// If we're doing a pixel read on this thread and we have new rendered data,
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// then do the pixel read now.
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if (pboHasNewData[pboBufferIndex])
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if (gpuScreen3DHasNewData[gpuScreen3DBufferIndex])
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{
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execReadPixelsTask(&pboBufferIndex);
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pboHasNewData[pboBufferIndex] = false;
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}
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else if (gpuScreen3DHasNewData)
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{
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execReadPixelsTask(NULL);
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gpuScreen3DHasNewData = false;
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execReadPixelsTask(&gpuScreen3DBufferIndex);
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gpuScreen3DHasNewData[gpuScreen3DBufferIndex] = false;
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}
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return ( gfx3d_convertedScreen + (lineNumber << (8+2)) );
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