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[client] cleanup of vbo and texture allocation

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This commit is contained in:
Geoffrey McRae 2017-12-03 22:10:15 +11:00
parent 7638925387
commit 14efdf7314
1 changed files with 38 additions and 30 deletions
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68
client/main.c
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@ -40,6 +40,8 @@ Place, Suite 330, Boston, MA 02111-1307 USA
#include "spice/spice.h" #include "spice/spice.h"
#include "kb.h" #include "kb.h"
#define VBO_BUFFERS 2
struct AppState struct AppState
{ {
bool hasBufferStorage; bool hasBufferStorage;
@ -185,21 +187,24 @@ int renderThread(void * unused)
struct KVMGFXHeader header; struct KVMGFXHeader header;
struct KVMGFXHeader newHeader; struct KVMGFXHeader newHeader;
SDL_Texture *texture = NULL; SDL_Texture *texture = NULL;
GLuint vboID[2] = {0, 0}; GLuint vboID[VBO_BUFFERS];
GLuint intFormat = 0; GLuint intFormat = 0;
GLuint vboFormat = 0; GLuint vboFormat = 0;
GLuint vboTex[2] = {0, 0}; GLuint vboTex[VBO_BUFFERS];
unsigned int texIndex = 0; unsigned int texIndex = 0;
unsigned int texSize = 0; unsigned int texSize = 0;
uint8_t *pixels = (uint8_t*)state.shm; uint8_t *pixels = (uint8_t*)state.shm;
uint8_t *texPixels[2] = {NULL, NULL}; uint8_t *texPixels[VBO_BUFFERS];
unsigned int ticks = SDL_GetTicks(); unsigned int ticks = SDL_GetTicks();
unsigned int frameCount = 0; unsigned int frameCount = 0;
SDL_Texture *textTexture = NULL; SDL_Texture *textTexture = NULL;
SDL_Rect textRect = {0, 0, 0, 0}; SDL_Rect textRect = {0, 0, 0, 0};
memset(&header, 0, sizeof(struct KVMGFXHeader)); memset(&header , 0, sizeof(struct KVMGFXHeader));
memset(&vboID , 0, sizeof(vboID));
memset(&vboTex , 0, sizeof(vboTex));
memset(&texPixels, 0, sizeof(texPixels));
// initial guest kick to get things started // initial guest kick to get things started
ivshmem_kick_irq(state.shm->guestID, 0); ivshmem_kick_irq(state.shm->guestID, 0);
@ -232,12 +237,12 @@ int renderThread(void * unused)
{ {
if (vboTex[0]) if (vboTex[0])
{ {
glDeleteTextures(1, vboTex); glDeleteTextures(VBO_BUFFERS, vboTex);
memset(vboTex, 0, sizeof(vboTex)); memset(vboTex, 0, sizeof(vboTex));
} }
glUnmapBuffer(GL_TEXTURE_BUFFER); glUnmapBuffer(GL_TEXTURE_BUFFER);
glDeleteBuffers(2, vboID); glDeleteBuffers(VBO_BUFFERS, vboID);
memset(vboID, 0, sizeof(vboID)); memset(vboID, 0, sizeof(vboID));
} }
} }
@ -294,8 +299,8 @@ int renderThread(void * unused)
} }
// setup two buffers so we don't have to use fences // setup two buffers so we don't have to use fences
glGenBuffers(2, vboID); glGenBuffers(VBO_BUFFERS, vboID);
for (int i = 0; i < 2; ++i) for (int i = 0; i < VBO_BUFFERS; ++i)
{ {
glBindBuffer(GL_PIXEL_UNPACK_BUFFER, vboID[i]); glBindBuffer(GL_PIXEL_UNPACK_BUFFER, vboID[i]);
glBufferStorage(GL_PIXEL_UNPACK_BUFFER, texSize, 0, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT); glBufferStorage(GL_PIXEL_UNPACK_BUFFER, texSize, 0, GL_MAP_WRITE_BIT | GL_MAP_PERSISTENT_BIT);
@ -313,25 +318,28 @@ int renderThread(void * unused)
if (!state.hasBufferStorage) if (!state.hasBufferStorage)
{ {
texIndex = 0; texIndex = 0;
glDeleteBuffers(2, vboID); glDeleteBuffers(VBO_BUFFERS, vboID);
memset(vboID, 0, sizeof(vboID)); memset(vboID, 0, sizeof(vboID));
continue; continue;
} }
// create the texture // create the textures
glGenTextures(1, vboTex); glGenTextures(VBO_BUFFERS, vboTex);
glBindTexture(GL_TEXTURE_2D, vboTex[0]); for (int i = 0; i < VBO_BUFFERS; ++i)
glTexImage2D( {
GL_TEXTURE_2D, glBindTexture(GL_TEXTURE_2D, vboTex[i]);
0, glTexImage2D(
intFormat, GL_TEXTURE_2D,
newHeader.width, newHeader.height, 0,
0, intFormat,
vboFormat, newHeader.width, newHeader.height,
GL_UNSIGNED_BYTE, 0,
(void*)0 vboFormat,
); GL_UNSIGNED_BYTE,
glBindTexture(GL_TEXTURE_2D, 0); (void*)0
);
glBindTexture(GL_TEXTURE_2D, 0);
}
} }
else else
{ {
@ -376,9 +384,9 @@ int renderThread(void * unused)
glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, texSize); glFlushMappedBufferRange(GL_PIXEL_UNPACK_BUFFER, 0, texSize);
// bind the texture and update it // bind the texture and update it
glBindTexture(GL_TEXTURE_2D , vboTex[0] ); glBindTexture(GL_TEXTURE_2D , vboTex[texIndex]);
glPixelStorei(GL_UNPACK_ALIGNMENT , 1 ); glPixelStorei(GL_UNPACK_ALIGNMENT , 1 );
glPixelStorei(GL_UNPACK_ROW_LENGTH, header.width); glPixelStorei(GL_UNPACK_ROW_LENGTH , header.width );
glTexSubImage2D( glTexSubImage2D(
GL_TEXTURE_2D, GL_TEXTURE_2D,
0, 0,
@ -420,7 +428,7 @@ int renderThread(void * unused)
glBindTexture(GL_TEXTURE_2D, 0); glBindTexture(GL_TEXTURE_2D, 0);
// update our texture index // update our texture index
if (++texIndex == 2) if (++texIndex == VBO_BUFFERS)
texIndex = 0; texIndex = 0;
} }
else else
@ -509,9 +517,9 @@ int renderThread(void * unused)
state.running = false; state.running = false;
if (state.hasBufferStorage) if (state.hasBufferStorage)
{ {
glDeleteTextures(1, vboTex ); glDeleteTextures(VBO_BUFFERS, vboTex);
glUnmapBuffer (GL_TEXTURE_BUFFER); glUnmapBuffer (GL_TEXTURE_BUFFER );
glDeleteBuffers (2, vboID ); glDeleteBuffers (VBO_BUFFERS, vboID );
} }
else else
if (texture) if (texture)